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omr-ws-023ab784a6e5dacd7d97335e83e66579e280538db3df1e35e223e9f62f13c8d9
An acute triangle \(ABC\) is inscribed in a circle of radius 1 with center \(O\); all the angles of \(ABC\) are greater than \(45^\circ\). \(B_{1}\) is the foot of the perpendicular from \(B\) to \(CO\), \(B_{2}\) is the foot of the perpendicular from \(B_{1}\) to \(AC\). Similarly, \(C_{1}\) is the foot of the perpend...
[ "\\(\\frac{1}{2}\\)" ]
[ "An acute triangle \\(ABC\\) is inscribed in a circle of radius 1 with center \\(O\\); all the angles of \\(ABC\\) are greater than \\(45^\\circ\\). \\(B_{1}\\) is the foot of the perpendicular from \\(B\\) to \\(CO\\), \\(B_{2}\\) is the foot of the perpendicular from \\(B_{1}\\) to \\(AC\\). Similarly, \\(C_{1}\\...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 7 }
23
0
0
omr-ws-7cc328cf67a60a24102c99a17e62f923465d926ef0c1c7a73df65e5e9e6faef2
An acute triangle \(ABC\) is inscribed in a circle. Two altitudes \(AM\) and \(CN\) are extended to meet the circle at \(P\) and \(Q\) respectively. Given that \(PQ:AC = 3:2\), find \(\cos \angle ABC\).
[ "\\(\\frac{3}{4}\\)" ]
[ "An acute triangle \\(ABC\\) is inscribed in a circle. Two altitudes \\(AM\\) and \\(CN\\) are extended to meet the circle at \\(P\\) and \\(Q\\) respectively. Given that \\(PQ:AC = 3:2\\), find \\(\\cos \\angle ABC\\)." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect", "tir" ]
{ "cot": 24, "genselect": 7, "tir": 6 }
37
0
0
omr-ws-ae6cd3fdb58e2b83f032486dea975d31c8242b286fdec7c0605cc33393d6e930
An acute triangle \(PNK\) is located in a circle with diameter \(MN\). Let \(A\) be the intersection of \(MN\) with \(PK\) and \(H\) be a point on the arc \(PN\) that does not contain \(K\). The circumcircle of triangle \(PAH\) intersects \(MN\) and \(PN\) at points \(B\) and \(D\), respectively. Circles with diameter ...
[ "8" ]
[ "An acute triangle \\(PNK\\) is located in a circle with diameter \\(MN\\). Let \\(A\\) be the intersection of \\(MN\\) with \\(PK\\) and \\(H\\) be a point on the arc \\(PN\\) that does not contain \\(K\\). The circumcircle of triangle \\(PAH\\) intersects \\(MN\\) and \\(PN\\) at points \\(B\\) and \\(D\\), respe...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 2 }
2
0
0
omr-ws-070e71b24b636864190d57e6bbe06dbea4c0b863f00f01d52dbdb547345a0da2
An acute triangle and a circle centered at the triangle's incenter both have an area of \(4\pi\). Given that \(\frac{3}{4}\) of the circle's circumference lies outside the triangle, find the total area of the regions that are inside the triangle and outside the circle.
[ "3\\pi + 3" ]
[ "An acute triangle and a circle centered at the triangle's incenter both have an area of \\(4\\pi\\). Given that \\(\\frac{3}{4}\\) of the circle's circumference lies outside the triangle, find the total area of the regions that are inside the triangle and outside the circle." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 12, "genselect": 6 }
18
0
0
omr-ws-d18f2ab4449b8db1170a06356aed90e2dbd3376533fcfce08303512e5ce6c5c4
An acute triangle is inscribed in a circle. The resulting three minor arcs of the circle are reflected about the corresponding sides of the triangle. Let $P$ be the point of concurrency of the reflected arcs. If the triangle has side lengths 5, 12, and 13, calculate the distance from $P$ to the circumcenter of the tria...
[ "\\dfrac{13}{2}" ]
[ "An acute triangle is inscribed in a circle. The resulting three minor arcs of the circle are reflected about the corresponding sides of the triangle. Let $P$ be the point of concurrency of the reflected arcs. If the triangle has side lengths 5, 12, and 13, calculate the distance from $P$ to the circumcenter of the...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 7 }
7
0
0
omr-ws-a86ad4130409ca4ddb6c7c4f17f83b87bd905f59531c971846d73ebdd223eddd
An acute-angled triangle $ABC$ is such that $\angle A = 60^\circ$. A billiard ball starts from vertex $A$ along the bisector of angle $A$, reflects off side $BC$ according to the law "the angle of reflection equals the angle of incidence," and continues along a straight line without any further reflections. Let $O$ be ...
[ "1" ]
[ "An acute-angled triangle $ABC$ is such that $\\angle A = 60^\\circ$. A billiard ball starts from vertex $A$ along the bisector of angle $A$, reflects off side $BC$ according to the law \"the angle of reflection equals the angle of incidence,\" and continues along a straight line without any further reflections. Le...
[ "aops_c5_contests_amp_programs" ]
[ "cot" ]
{ "cot": 3 }
3
0
0
omr-ws-354fea2a66c238c364b865f59d8900366cb25e571a2e305b61e56749c9b0c8bf
An acute-angled triangle $\mathcal{T}$ is inscribed in a circle $\Omega$ with center $O$ and radius $R$. Denote by $\Gamma$ the nine-point circle of $\mathcal{T}$. A circle $\omega$ passes through vertices $A$ and $B$ of $\mathcal{T}$ and the center $O$ of $\Omega$. Let $P$ be the intersection point of the common exter...
[ "1" ]
[ "An acute-angled triangle $\\mathcal{T}$ is inscribed in a circle $\\Omega$ with center $O$ and radius $R$. Denote by $\\Gamma$ the nine-point circle of $\\mathcal{T}$. A circle $\\omega$ passes through vertices $A$ and $B$ of $\\mathcal{T}$ and the center $O$ of $\\Omega$. Let $P$ be the intersection point of the ...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 4, "genselect": 2 }
6
0
0
omr-ws-3fbeca581fb3fd69918cfc683495cc22153d9bf47b8555c0f8aeb3711f034d38
An acute-angled triangle \(ABC\) with \(AB < AC\) is inscribed in a circle \(\omega\). Let \(M\) be the centroid of \(\triangle ABC\), and let \(AH\) be an altitude of the triangle. A ray \(MH\) meets \(\omega\) at \(A'\). Let \(O\) be the circumcenter of \(\triangle A'HB\). Calculate the length of \(AO\) if \(AB = 13\...
[ "14" ]
[ "An acute-angled triangle \\(ABC\\) with \\(AB < AC\\) is inscribed in a circle \\(\\omega\\). Let \\(M\\) be the centroid of \\(\\triangle ABC\\), and let \\(AH\\) be an altitude of the triangle. A ray \\(MH\\) meets \\(\\omega\\) at \\(A'\\). Let \\(O\\) be the circumcenter of \\(\\triangle A'HB\\). Calculate the...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-9e757678fe94b5a41af038909b076580f6a9b465eee03d098ad3968bdde5fe4c
An acute-angled triangle \(ABC\) with orthocenter \(H\) is inscribed in a circle \(\omega\) with center \(O\). The line \(d\) passes through \(H\) and intersects arcs \(AB\) and \(AC\) at points \(P\) and \(Q\), respectively. Let \(AA'\) be the diameter of the circle \(\omega\). Lines \(A'P\) and \(A'Q\) intersect \(BC...
[ "169" ]
[ "An acute-angled triangle \\(ABC\\) with orthocenter \\(H\\) is inscribed in a circle \\(\\omega\\) with center \\(O\\). The line \\(d\\) passes through \\(H\\) and intersects arcs \\(AB\\) and \\(AC\\) at points \\(P\\) and \\(Q\\), respectively. Let \\(AA'\\) be the diameter of the circle \\(\\omega\\). Lines \\(...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 6 }
6
0
0
omr-ws-71ffa9ac08f257ae2133ec112e4cb8dec957777eaed208007c4a04683bdb483e
An acute-angled triangle \(ABC\) with orthocenter \(H\) is inscribed in a circle \(\omega\) with center \(O\). The line \(d\) passes through \(H\) and intersects the smaller arcs \(AB\) and \(AC\) of the circle \(\omega\) at points \(P\) and \(Q\), respectively. Let \(AA'\) be the diameter of the circle \(\omega\), and...
[ "90" ]
[ "An acute-angled triangle \\(ABC\\) with orthocenter \\(H\\) is inscribed in a circle \\(\\omega\\) with center \\(O\\). The line \\(d\\) passes through \\(H\\) and intersects the smaller arcs \\(AB\\) and \\(AC\\) of the circle \\(\\omega\\) at points \\(P\\) and \\(Q\\), respectively. Let \\(AA'\\) be the diamete...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 7 }
7
0
0
omr-ws-dd0e51986e9c26429c2682fc3f189b18b4aa8fe257d4c189e1b2a539c2b212e5
An acute-angled triangle is inscribed in a circle of radius $R$. The distance between the center of the circle and the point of intersection of the medians of the triangle is $d$. Find the radius of a circle inscribed in a triangle whose vertices are the feet of the altitudes of this triangle.
[ "\\dfrac{R^2 - 9d^2}{4R}" ]
[ "An acute-angled triangle is inscribed in a circle of radius $R$. The distance between the center of the circle and the point of intersection of the medians of the triangle is $d$. Find the radius of a circle inscribed in a triangle whose vertices are the feet of the altitudes of this triangle." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-908509d72cc1b65d2d45abcc0f6bce348ef687762a4025a18bd0ea6647fb53ef
An acute-angled triangle with integer coordinates and no sides parallel to the coordinate axes has an area of 348 and one side of length 29. What is the product of the lengths of the other two sides?
[ "870" ]
[ "An acute-angled triangle with integer coordinates and no sides parallel to the coordinate axes has an area of 348 and one side of length 29. What is the product of the lengths of the other two sides?" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 31 }
31
0
0
omr-ws-934d30bbafa569c25b87f7e048297107ca353c1ad3711a6f64a41fc0c409f670
An acute-angled triangle with integer coordinates for its vertices and no sides parallel to the coordinate axes has an area of $348$ and one side of length $29$. What is the product of the lengths of the other two sides?
[ "\\(58\\sqrt{265}\\)" ]
[ "An acute-angled triangle with integer coordinates for its vertices and no sides parallel to the coordinate axes has an area of $348$ and one side of length $29$. What is the product of the lengths of the other two sides?" ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-b70d1a38e87263334aaa53f1b8f2adcf16ed0da3793538b54aea8770d2003232
An acute-angled triangle with vertices at different integer coordinates and no sides parallel to the coordinate axes has an area of 348 and one side of length 29. What is the product of the lengths of the other two sides?
[ "870" ]
[ "An acute-angled triangle with vertices at different integer coordinates and no sides parallel to the coordinate axes has an area of 348 and one side of length 29. What is the product of the lengths of the other two sides?" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-5aaecc60662706fe09259f044e7d728e888473ed572b46270362c33259ca50fe
An advertiser is analyzing the growth of likes for their new ad on Youtube. The increase in likes in a given second is equal to 4T_av, where T_av is the midpoint of the time interval. For example, the increase in likes from 3 seconds to 4 seconds is equal to 4 x 3.5. i) If the total likes follow the path as \( l(t) = a...
[ "0", "\\( b = 0 \\)" ]
[ "An advertiser is analyzing the growth of likes for their new ad on Youtube. The increase in likes in a given second is equal to 4T_av, where T_av is the midpoint of the time interval. For example, the increase in likes from 3 seconds to 4 seconds is equal to 4 x 3.5.\ni) If the total likes follow the path as \\( l...
[ "aops_c4_high_school_math", "aops_c6_high_school_olympiads", "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 48, "tir": 6 }
54
0
0
omr-ws-d26da7b03b1102856d3c7591f19e0bf1278cc9de4cd97298f4574b524961c0d6
An aerosol can is designed as a cylinder with radius $r$ and height $h$, topped and bottomed by hemispheres of radius $r$. The volume of the cylinder is $\pi r^2h$, and the surface area of the sides of the cylinder is $2\pi rh$. The volume of a sphere is $\frac{4}{3}\pi r^3$, and the surface area is $4\pi r^2$. What ra...
[ "\\( h:r = 4:1 \\)" ]
[ "An aerosol can is designed as a cylinder with radius $r$ and height $h$, topped and bottomed by hemispheres of radius $r$. The volume of the cylinder is $\\pi r^2h$, and the surface area of the sides of the cylinder is $2\\pi rh$. The volume of a sphere is $\\frac{4}{3}\\pi r^3$, and the surface area is $4\\pi r^2...
[ "aops_c7_college_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-b415b45815a501d8536bb586868e04516f83885af3644d596422cd4c01820591
An agricultural sprinkler distributes water in a circular pattern of radius 100 ft. It supplies water to a depth of \( e^{-r} \) feet per hour at a distance of \( r \) feet from the sprinkler. What is the total amount of water supplied per hour to the region inside the circle of radius \( R \) centered at the sprinkler...
[ "\\( 2\\pi \\left( 1 - e^{-R} \\right) \\)" ]
[ "An agricultural sprinkler distributes water in a circular pattern of radius 100 ft. It supplies water to a depth of \\( e^{-r} \\) feet per hour at a distance of \\( r \\) feet from the sprinkler. What is the total amount of water supplied per hour to the region inside the circle of radius \\( R \\) centered at th...
[ "aops_c7_college_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-9045fa1789a1749ee0f57b8ea7acdd0db018f928c3c68e54fc0a501342134a9e
An air rescue plane averages 300 mph in still air and carries enough fuel for 5 hours of flying time. If it encounters a constant wind of 30 mph, how far can it fly and return safely?
[ "1485" ]
[ "An air rescue plane averages 300 mph in still air and carries enough fuel for 5 hours of flying time. If it encounters a constant wind of 30 mph, how far can it fly and return safely?" ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-902a35fd5187a25c12d4b71e4d7a06316b543516641f2163bfca1f98296a0077
An air-fire station is located \(a\) miles due North of a point \(P\) on a river that runs due East. A popular campground is located at a point \(c\) miles due North of a point \(Q\) on the river. Point \(Q\) is \(b\) miles East of point \(P\). To respond to a fire at the campground, a helicopter has to fly to the rive...
[ "\\(9a^2 - 25c^2 = 4b^2\\)" ]
[ "An air-fire station is located \\(a\\) miles due North of a point \\(P\\) on a river that runs due East. A popular campground is located at a point \\(c\\) miles due North of a point \\(Q\\) on the river. Point \\(Q\\) is \\(b\\) miles East of point \\(P\\). To respond to a fire at the campground, a helicopter has...
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 2, "tir": 2 }
4
0
0
omr-ws-73abe851696e550a540bdb55215717ae8553939196f50818a4ded5349a1a2147
An airbus leaves airport A at latitude \( x \) and longitude \( y \) for airport B at latitude \( x \) and longitude \( y+z \), where \( 0 < x < 90 \) and \( 0 < z < 180 \). The airbus takes the shortest path, which is the arc AB on a great circle. Find the greatest latitude reached by the airbus in terms of \( x \) an...
[ "\\arctan\\left( \\frac{\\tan x}{\\cos \\frac{z}{2}} \\right)" ]
[ "An airbus leaves airport A at latitude \\( x \\) and longitude \\( y \\) for airport B at latitude \\( x \\) and longitude \\( y+z \\), where \\( 0 < x < 90 \\) and \\( 0 < z < 180 \\). The airbus takes the shortest path, which is the arc AB on a great circle. Find the greatest latitude reached by the airbus in te...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 8, "genselect": 7 }
15
0
0
omr-ws-5c60a481562636f4a15ab5b7e8e6ecb71f12c0ec77b7add828a418a81f32543f
An aircraft can fly at a maximum speed of 30 km/h in still air and intends to fly from point A to point B, which is 850 km to the north-west of A. The wind is blowing at a speed of 20 km/h in the direction due north. Determine the course that the pilot must steer to fly from A to B in the shortest time possible.
[ "16.9 degrees north of west" ]
[ "An aircraft can fly at a maximum speed of 30 km/h in still air and intends to fly from point A to point B, which is 850 km to the north-west of A. The wind is blowing at a speed of 20 km/h in the direction due north. Determine the course that the pilot must steer to fly from A to B in the shortest time possible." ...
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 5, "genselect": 3, "tir": 14 }
22
0
0
omr-ws-ef57dd920315a448bb3f2212efbdaee2c085522fd470a74bc274da03fff7b0ca
An airline company is planning to introduce a network of connections between ten different airports of Sawubonia, ranked by priority from first to last. A network is called feasible if it satisfies the following conditions: - All connections operate in both directions. - If there is a direct connection between two airp...
[ "512" ]
[ "An airline company is planning to introduce a network of connections between ten different airports of Sawubonia, ranked by priority from first to last. A network is called feasible if it satisfies the following conditions:\n- All connections operate in both directions.\n- If there is a direct connection between t...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 4 }
4
0
0
omr-ws-2bf4d822b0ea8271abbdfa724dfb23c840dbf862c19cba8ef7242237704be0c4
An airline company is planning to introduce a network of connections between the ten different airports of Sawubonia. The airports are ranked by priority from first to last (with no ties). We call such a network feasible if it satisfies the following conditions: - All connections operate in both directions. - If there ...
[ "512" ]
[ "An airline company is planning to introduce a network of connections between the ten different airports of Sawubonia. The airports are ranked by priority from first to last (with no ties). We call such a network feasible if it satisfies the following conditions:\n- All connections operate in both directions.\n- If...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 4, "genselect": 7 }
11
0
0
omr-ws-1751daab88aeccbe36b7b17cf6af2ebf1ec7a96f338ae7400972eb0ab3b13701
An airplane accelerates at $10$ mph per second and decelerates at $15$ mph/sec. Given that its takeoff speed is $180$ mph, and the pilots want enough runway length to safely decelerate to a stop from any speed below takeoff speed, what’s the shortest length that the runway can be allowed to be? Assume the pilots always...
[ "$\\frac{3}{4}$ miles" ]
[ "An airplane accelerates at $10$ mph per second and decelerates at $15$ mph/sec. Given that its takeoff speed is $180$ mph, and the pilots want enough runway length to safely decelerate to a stop from any speed below takeoff speed, what’s the shortest length that the runway can be allowed to be? Assume the pilots a...
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 15, "genselect": 2, "tir": 17 }
34
0
0
omr-ws-2cfe3ae75b8d6a709a2a9737671f944d2b2efeefcc67502d8d55ea76818ca2b5
An airplane can fly with the wind a distance of 600 miles in 5 hours. However, the return trip against the wind takes 6 hours. Find the speed of the plane in still air and the speed of the wind.
[ "P = 110, W = 10" ]
[ "An airplane can fly with the wind a distance of 600 miles in 5 hours. However, the return trip against the wind takes 6 hours. Find the speed of the plane in still air and the speed of the wind." ]
[ "aops_c4_high_school_math" ]
[ "tir" ]
{ "tir": 21 }
21
0
0
omr-ws-c71c4bcb349ab5a67261baf7e62b930b1decc31cccf554391a78e064b374a3d9
An airplane flies west at 150 m/s at an altitude of 1000 m. A searchlight on the ground in the same vertical plane must be kept on the airplane. What is the rate of revolution of the searchlight when the airplane is 500 m due east of the searchlight?
[ "\\(\\frac{3}{25}\\) radians/second." ]
[ "An airplane flies west at 150 m/s at an altitude of 1000 m. A searchlight on the ground in the same vertical plane must be kept on the airplane. What is the rate of revolution of the searchlight when the airplane is 500 m due east of the searchlight?" ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 17 }
33
0
0
omr-ws-5865b5055916d1b390fc59a6ed7aaa78bb0564c0618b2a9fd819e59011fc6edc
An airplane flying 3500 feet above the ground sees an airport at an angle of depression of 77°. How far is the airplane from the airport?
[ "3592.06" ]
[ "An airplane flying 3500 feet above the ground sees an airport at an angle of depression of 77°. How far is the airplane from the airport?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 11, "genselect": 7, "tir": 18 }
36
0
0
omr-ws-7af299525ec0521fa28b4eafd7155fe81fd05d513800fe073579de248a4bb2c6
An airplane has a bearing of 40 degrees and an airspeed of 240 mph. The wind is blowing from the northwest (bearing 135 degrees) at 30 mph. Determine the bearing of the course and the ground speed of the airplane.
[ "Ground speed = 239.23 mph, Bearing = 47.21 degrees" ]
[ "An airplane has a bearing of 40 degrees and an airspeed of 240 mph. The wind is blowing from the northwest (bearing 135 degrees) at 30 mph. Determine the bearing of the course and the ground speed of the airplane." ]
[ "aops_c4_high_school_math", "c4_high_school_math" ]
[ "tir" ]
{ "tir": 18 }
18
0
0
omr-ws-6d1ded3765b5ffd087cd64cdf99230441d2f65fb09d5dfec60b54b61738ba4eb
An airplane has three sections: First Class (24 seats), Business Class ($25\%$ of the total number of seats) and Economy ($\frac{2}{3}$ of the total number of seats). How many seats does the plane have?
[ "288" ]
[ "An airplane has three sections: First Class (24 seats), Business Class ($25\\%$ of the total number of seats) and Economy ($\\frac{2}{3}$ of the total number of seats). How many seats does the plane have?" ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-0cc5f82576bfe891179a6bf9852688af70a95cba9cbb2c8db3f6834bae9554c4
An airplane is flying on a bearing of 335 degrees at 430 mph. Find the component form of the velocity of the airplane. (Note: Component form refers to the horizontal and vertical components of the velocity vector.)
[ "\\langle -181.73, 389.71 \\rangle" ]
[ "An airplane is flying on a bearing of 335 degrees at 430 mph. Find the component form of the velocity of the airplane. (Note: Component form refers to the horizontal and vertical components of the velocity vector.)" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-af2f40b7d437c0e171aaf0527016b00a61165c4607ed3628460f37e5c17898fd
An airplane leaves an aircraft carrier and flies due south at 400 km/h. The carrier proceeds 60° east of north at 32 km/h. If the plane has enough fuel for 5 hours of flying, what is the maximum distance south the pilot can travel, so that the fuel remaining will allow a safe return to the carrier? (You may assume Eart...
[ "1200 km" ]
[ "An airplane leaves an aircraft carrier and flies due south at 400 km/h. The carrier proceeds 60° east of north at 32 km/h. If the plane has enough fuel for 5 hours of flying, what is the maximum distance south the pilot can travel, so that the fuel remaining will allow a safe return to the carrier? (You may assume...
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-d1088d5eac5716f6ed5cc84ac3beadf59bed610e4f1af33e33260da9596dd692
An airplane leaves the runway with an angle of climb of 18 degrees and a speed of 275 feet per second. Find the plane's altitude after two minutes.
[ "10198" ]
[ "An airplane leaves the runway with an angle of climb of 18 degrees and a speed of 275 feet per second. Find the plane's altitude after two minutes." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 15, "genselect": 6, "tir": 28 }
49
0
0
omr-ws-36d9e5e5463fa4d15253029fecdfddd1e50d71fa194efeeb6504f629683fc57c
An airplane loses altitude at the rate of 400 miles per hour. What is the rate of decrease of the visible portion of the surface of the earth when the plane is one mile high? (Assume the earth is a sphere)
[ "-9950000" ]
[ "An airplane loses altitude at the rate of 400 miles per hour. What is the rate of decrease of the visible portion of the surface of the earth when the plane is one mile high? (Assume the earth is a sphere)" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 3 }
3
0
0
omr-ws-7ce588bd2492a60edfa72a775153d3c0e4e73e83cd52f292906c9b5db23c4287
An airplane starts from a point on the equator and moves northeast with speed \( v \). Given the radius of the Earth is \( R \), will the airplane reach the North Pole? If so, how long will it take to reach the North Pole?
[ "\\( \\frac{\\sqrt{2}R}{v} \\)" ]
[ "An airplane starts from a point on the equator and moves northeast with speed \\( v \\). Given the radius of the Earth is \\( R \\), will the airplane reach the North Pole? If so, how long will it take to reach the North Pole?" ]
[ "aops_c6_high_school_olympiads" ]
[ "tir" ]
{ "tir": 1 }
1
0
0
omr-ws-7da9187e6bd2a5fdb0a542957cf592329356e9f582e80ac4c8074ec0dd63698d
An airplane takes off with a ground velocity of 375 km/h on a heading of N45°W, climbing at an angle of 15 degrees. A 20 km/h wind is blowing from the south. Determine the magnitude of the resultant air and ground velocities.
[ "362" ]
[ "An airplane takes off with a ground velocity of 375 km/h on a heading of N45°W, climbing at an angle of 15 degrees. A 20 km/h wind is blowing from the south. Determine the magnitude of the resultant air and ground velocities." ]
[ "aops_c7_college_math" ]
[ "cot", "genselect" ]
{ "cot": 9, "genselect": 7 }
16
0
0
omr-ws-d70c2d5ad43c1ae4a73f334b8e58a51541049ff1905716f86042f9156e73a63a
An airplane travels between two cities. The first half of the distance between the cities is traveled at a constant speed of 600 mi/hour, and the second half of the distance is traveled at a constant speed of 900 mi/hour. Find the average speed of the plane.
[ "720" ]
[ "An airplane travels between two cities. The first half of the distance between the cities is traveled at a constant speed of 600 mi/hour, and the second half of the distance is traveled at a constant speed of 900 mi/hour. Find the average speed of the plane." ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-770eb8514e2bd952cedda5c95f543599ddb27ad741d848cc7a7fab831be54907
An airplane was in flight from $A$ to $B$ in a straight line. Due to a head wind, after a certain time, it reduced its speed to $v$ km/h and therefore was $t_1$ minutes late. During a second flight from $A$ to $B$ the airplane for the same reason reduced its speed to the same level but this time $d$ km farther from $A$...
[ "w=\\frac{60vd}{60d+v(t_2-t_1)}\\mbox{ km/h}" ]
[ "An airplane was in flight from $A$ to $B$ in a straight line. Due to a head wind, after a certain time, it reduced its speed to $v$ km/h and therefore was $t_1$ minutes late. During a second flight from $A$ to $B$ the airplane for the same reason reduced its speed to the same level but this time $d$ km farther fro...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-95bf4b1b353455a926415ca5ef2c077f69749971e7a5c23061c87ae7479190cd
An airport contains 25 terminals, each pair connected by tunnels. There are exactly 50 bidirectional tunnels and the rest are unidirectional. A group of four terminals is called "connected" if from each terminal in the group, one can reach the other three using only the tunnels connecting them. Find the maximum number ...
[ "210" ]
[ "An airport contains 25 terminals, each pair connected by tunnels. There are exactly 50 bidirectional tunnels and the rest are unidirectional. A group of four terminals is called \"connected\" if from each terminal in the group, one can reach the other three using only the tunnels connecting them. Find the maximum ...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 11 }
11
0
0
omr-ws-87ce6b0d9160c74445c64c6f4755c0a3a5ec40b869dfc47bac5b610a8fa7e244
An airport contains 25 terminals, with each pair of terminals connected by tunnels. There are exactly 50 main tunnels that can be traversed in both directions, and the others are one-way tunnels. A group of four terminals is called "good" if from each terminal in the group, it is possible to reach the other three termi...
[ "210" ]
[ "An airport contains 25 terminals, with each pair of terminals connected by tunnels. There are exactly 50 main tunnels that can be traversed in both directions, and the others are one-way tunnels. A group of four terminals is called \"good\" if from each terminal in the group, it is possible to reach the other thre...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 11, "genselect": 1 }
12
0
0
omr-ws-4d7670708fbf32e52e3ce187bca38bdaf5ae94e9bb80781adac58e510f5a05a6
An airport has a collection of gates arranged in a \(10^{2022} \times 10^{2022}\) grid, labeled 1, 2, 3, \ldots, \(10^{4044}\) in some order. A traveler's gate is the unique gate with the property that its label is less than all neighboring gates (horizontally or vertically). The traveler can ask for the label of a par...
[ "2 \\times 10^{2022} - 1" ]
[ "An airport has a collection of gates arranged in a \\(10^{2022} \\times 10^{2022}\\) grid, labeled 1, 2, 3, \\ldots, \\(10^{4044}\\) in some order. A traveler's gate is the unique gate with the property that its label is less than all neighboring gates (horizontally or vertically). The traveler can ask for the lab...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 3 }
3
0
0
omr-ws-4b5b9117a1a78cb198cd39ce0e0299254215989d9953fe502511ea0655a6ff9d
An alarm clock runs 4 minutes slow every hour. It was set right $3 \frac{1}{2}$ hours ago. Now another clock which is correct shows noon. In how many minutes, to the nearest minute, will the alarm clock show noon?
[ "15" ]
[ "An alarm clock runs 4 minutes slow every hour. It was set right $3 \\frac{1}{2}$ hours ago. Now another clock which is correct shows noon. In how many minutes, to the nearest minute, will the alarm clock show noon?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 15, "tir": 9 }
24
0
0
omr-ws-074ebcafaf1fa8a47ef65bcc547613d5c372025a2ef46aa8939feb15c445b21f
An alien has collected 30 fruits with different degrees of sweetness. He has a device that can sort exactly 5 fruits from least to most sugary. How many times must the alien use the device to find the second least sugary fruit among the 30 fruits?
[ "9" ]
[ "An alien has collected 30 fruits with different degrees of sweetness. He has a device that can sort exactly 5 fruits from least to most sugary. How many times must the alien use the device to find the second least sugary fruit among the 30 fruits?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 12, "genselect": 8 }
20
0
0
omr-ws-173a4e3edafa0fa82f196a7fb1748c846745186f15242bbf21ce36ff9ed379d2
An alien on the surface of a spherical planet can run at a top speed of \( u \). An alien hunter in a spaceship can fly at a top speed of \( v \). The hunter does not know the position of the alien initially but can spot and kill the alien as soon as it comes into the field of vision of the spacecraft. Determine the mi...
[ "1" ]
[ "An alien on the surface of a spherical planet can run at a top speed of \\( u \\). An alien hunter in a spaceship can fly at a top speed of \\( v \\). The hunter does not know the position of the alien initially but can spot and kill the alien as soon as it comes into the field of vision of the spacecraft. Determi...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 2 }
2
0
0
omr-ws-3a273c89a5eb737fcee23fcdb4fbda08614504af49af3f09e688b4a8b15db1a5
An alien population starts with one member. Each day, any given member has a $\frac{1}{5}$ probability to produce two offspring, a $\frac{1}{3}$ probability to produce one offspring, and a $\frac{7}{15}$ probability of dying. The probability that the alien population eventually does not die out can be expressed in simp...
[ "4" ]
[ "An alien population starts with one member. Each day, any given member has a $\\frac{1}{5}$ probability to produce two offspring, a $\\frac{1}{3}$ probability to produce one offspring, and a $\\frac{7}{15}$ probability of dying. The probability that the alien population eventually does not die out can be expressed...
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-835f162a940931e49bce790bf728f61aac88b26db584c4cf1a0516486589ad28
An alien race has a unique language consisting of only two letters $X$ and $Z$. In this language, each word consists of at least one letter and no more than 11 letters. For every two words, if the first and second words are written side by side, the result is not a word. Find the maximum number of words in this languag...
[ "4094" ]
[ "An alien race has a unique language consisting of only two letters $X$ and $Z$. In this language, each word consists of at least one letter and no more than 11 letters. For every two words, if the first and second words are written side by side, the result is not a word. Find the maximum number of words in this la...
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-5d924734eea2ece07b2e83767c74e124727d123b2679e6710e7d3a9cc55c4306
An alien sitting on a table undergoes one of four actions every hour with equal probability: disappear, do nothing, clone itself (resulting in 2 aliens), or clone itself twice (resulting in 3 aliens). Each new clone behaves independently with the same probabilities. What is the probability that there will be no more al...
[ "\\(\\sqrt{2} - 1\\)" ]
[ "An alien sitting on a table undergoes one of four actions every hour with equal probability: disappear, do nothing, clone itself (resulting in 2 aliens), or clone itself twice (resulting in 3 aliens). Each new clone behaves independently with the same probabilities. What is the probability that there will be no mo...
[ "aops_c4_high_school_math", "c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 28 }
44
0
0
omr-ws-633486920094499401822009caa3e1981d5b223b9d89aae96442169314d6237d
An alien species starts with one alien. Each day, each alien independently does one of the following with equal probability: (i) kills itself, (ii) does nothing, (iii) splits into two aliens (killing itself in the process), or (iv) splits into three aliens (killing itself in the process). What is the probability that t...
[ "\\(\\sqrt{2} - 1\\)" ]
[ "An alien species starts with one alien. Each day, each alien independently does one of the following with equal probability: (i) kills itself, (ii) does nothing, (iii) splits into two aliens (killing itself in the process), or (iv) splits into three aliens (killing itself in the process). What is the probability t...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 28 }
44
0
0
omr-ws-6daf0cf50c83bfb6e0c396a1e698aa65d5cb2575b2d6fa888ff69e188e7ab107
An alloy consists of two metals (copper and tin) in proportion 1:2; another alloy consists of the same metals in proportion 2:3. How many pounds of each alloy should be taken to get 1,320 pounds of an alloy containing the metals in proportion 17:27?
[ "alloy 1: 270, alloy 2: 1050" ]
[ "An alloy consists of two metals (copper and tin) in proportion 1:2; another alloy consists of the same metals in proportion 2:3. How many pounds of each alloy should be taken to get 1,320 pounds of an alloy containing the metals in proportion 17:27?" ]
[ "aops_c5_contests_amp_programs" ]
[ "cot", "tir" ]
{ "cot": 4, "tir": 31 }
35
0
0
omr-ws-3ab78daed8a300c14e8b30ab6b9a0309ddf632101df1884ef540eba6248f98a6
An alloy of copper and silver contains 2 kg more copper than silver. If a further $\frac{9}{16}$ of the silver in the alloy is added, then the percentage of silver in the new alloy will be equal to that of the copper in the original alloy. Find the mass of the original alloy.
[ "18 kg" ]
[ "An alloy of copper and silver contains 2 kg more copper than silver. If a further $\\frac{9}{16}$ of the silver in the alloy is added, then the percentage of silver in the new alloy will be equal to that of the copper in the original alloy. Find the mass of the original alloy." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-de9d1ac6f52e338e6f58a0671430c6685a236c0eec7a61823713cdc123bcf559
An alphabet consists of six letters which are coded in Morse code as $$\cdot \ ;\ -\ ;\ ..\ ;\ - \, -\ ;\ \cdot \, -\ ;\ -\, .$$ A word was transmitted without spaces between the letters so that the resultant continuous line of dots and dashes contained 12 characters. In how many ways can that word be read?
[ "233" ]
[ "An alphabet consists of six letters which are coded in Morse code as $$\\cdot \\ ;\\ -\\ ;\\ ..\\ ;\\ - \\, -\\ ;\\ \\cdot \\, -\\ ;\\ -\\, .$$ A word was transmitted without spaces between the letters so that the resultant continuous line of dots and dashes contained 12 characters. In how many ways can that word ...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-2a4a23bdb44c4bb734934d46c8e8c08b1d5767934069064255deb311fccee761
An alphabet consists of three letters. Some sequences of letters of length two or more are prohibited, and all of the prohibited sequences have different lengths. A word is a sequence of letters of any length. A correct word does not contain any prohibited sequences. Let $N$ be the smallest positive integer such that t...
[ "5" ]
[ "An alphabet consists of three letters. Some sequences of letters of length two or more are prohibited, and all of the prohibited sequences have different lengths. A word is a sequence of letters of any length. A correct word does not contain any prohibited sequences. Let $N$ be the smallest positive integer such t...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 4 }
4
0
0
omr-ws-5e00f0463550da6c2717a0b9be22d5d6400013b8a5f953beab46cdd6a9feea39
An alphabet consists of three letters. Some sequences of letters of length two or more are prohibited, and all of the prohibited sequences have different lengths. A word is a sequence of letters of any length. A correct word does not contain any prohibited sequences. Let $f(n)$ be the number of correct words of length ...
[ "7" ]
[ "An alphabet consists of three letters. Some sequences of letters of length two or more are prohibited, and all of the prohibited sequences have different lengths. A word is a sequence of letters of any length. A correct word does not contain any prohibited sequences. Let $f(n)$ be the number of correct words of le...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 7 }
7
0
0
omr-ws-84c165358ce5612ebb1564ed6134fa96a3f5bb042009e3381efbdbb96e01f502
An altitude $BD$ and a bisector $BE$ are drawn in the triangle $A BC$ from the vertex $B$. It is known that the length of the side $| AC | = 1$, and the magnitudes of the angles $BEC$, $ABD$, $ABE$, $BAC$ form an arithmetic progression. Find the length of the side $BC$.
[ "$\\frac{1}{2}$" ]
[ "An altitude $BD$ and a bisector $BE$ are drawn in the triangle $A BC$ from the vertex $B$. It is known that the length of the side $| AC | = 1$, and the magnitudes of the angles $BEC$, $ABD$, $ABE$, $BAC$ form an arithmetic progression. Find the length of the side $BC$." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-b0f2b0e0e9d8c09a5a657fd253e838d212cd7b0e0c90c6ec3e6b656a32d88a47
An altitude $BD$ is drawn from the vertex $B$ of the isosceles triangle $ABC$ to its base $AC$. The length of each of the lateral sides $A B$ and $BC$ of $\triangle ABC$ is 8 cm. A median $DE$ is drawn in $\triangle BCD$. A circle is inscribed in $\triangle BDE$ which touches the side $BE$ at a point $K$ and the side $...
[ "$\\frac{\\pi }{6}$" ]
[ "An altitude $BD$ is drawn from the vertex $B$ of the isosceles triangle $ABC$ to its base $AC$. The length of each of the lateral sides $A B$ and $BC$ of $\\triangle ABC$ is 8 cm. A median $DE$ is drawn in $\\triangle BCD$. A circle is inscribed in $\\triangle BDE$ which touches the side $BE$ at a point $K$ and th...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-6e96fd33ab723f2d92d0665f4f84ac7692ffae1f1b222a99ac4370b3c64f3869
An aluminum sphere with an irrational radius can be melted down to form two new spheres with integer radii in two different ways. What is the smallest possible volume of the original sphere?
[ "\\(1729\\)" ]
[ "An aluminum sphere with an irrational radius can be melted down to form two new spheres with integer radii in two different ways. What is the smallest possible volume of the original sphere?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 12, "genselect": 1, "tir": 2 }
15
0
0
omr-ws-e7e5d25c4a3135ae8807544c11d624a0c2fdd0913e29fce7fc6bf4096b5bf2bf
An amoeba has a 25% chance of dying and a 75% chance of splitting into two amoebas with these same probabilities. Starting with one amoeba, what is the probability that it will produce an infinite chain of amoebas that will never all die out?
[ "\\(\\frac{2}{3}\\)" ]
[ "An amoeba has a 25% chance of dying and a 75% chance of splitting into two amoebas with these same probabilities. Starting with one amoeba, what is the probability that it will produce an infinite chain of amoebas that will never all die out?" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 27 }
43
0
0
omr-ws-b321d618bccb5078d07f76bcc47cb71946fce2063e23c8e2b6730086ac683cf6
An amoeba is placed in a puddle one day, and on that same day it splits into two amoebas. The next day, each new amoeba splits into two new amoebas, and so on, so that each day every living amoeba splits into two new amoebas. After one week, how many amoebas are in the puddle? (Assume the puddle has no amoebas before t...
[ "128" ]
[ "An amoeba is placed in a puddle one day, and on that same day it splits into two amoebas. The next day, each new amoeba splits into two new amoebas, and so on, so that each day every living amoeba splits into two new amoebas. After one week, how many amoebas are in the puddle? (Assume the puddle has no amoebas be...
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-5a047c2a927634db7075111037ba196fc1fd7fdfd8621e907f64a3a2c1042259
An amoeba population starts with a single amoeba. After each minute, each amoeba will either die, split into two amoebas, or stay the same, each with equal probability. What is the probability that the amoeba population will eventually die out?
[ "1" ]
[ "An amoeba population starts with a single amoeba. After each minute, each amoeba will either die, split into two amoebas, or stay the same, each with equal probability. What is the probability that the amoeba population will eventually die out?" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-d444aabd01355c77770a9c306bd3064234b4ba8ab213d90458e607405018cee3
An amusement park has a giant double ferris wheel. The double ferris wheel has a 30-meter rotating arm attached at its center to a 25-meter main support (10 meters off the ground). At each end of the rotating arm is attached a ferris wheel measuring 20 meters in diameter rotating counterclockwise. The rotating arm take...
[ "\\( f(t) = 7.5 \\sin\\left(\\frac{\\pi t}{3}\\right) + 25 + 10 \\sin\\left(\\frac{\\pi t}{2}\\right) \\), Period: 12 minutes, Maximum height: 42.5 meters, Least \\( t \\) for maximum height: 3 minutes." ]
[ "An amusement park has a giant double ferris wheel. The double ferris wheel has a 30-meter rotating arm attached at its center to a 25-meter main support (10 meters off the ground). At each end of the rotating arm is attached a ferris wheel measuring 20 meters in diameter rotating counterclockwise. The rotating arm...
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-442ba6b295036c615ff1c37636ce474a708d2a6922e34bb223acd03cd74f54b4
An amusement park purchased equipment from a manufacturer for a list price of $42,000, minus trade discounts of 30/20/15. Calculate the amount of the trade discount on the purchase.
[ "22008" ]
[ "An amusement park purchased equipment from a manufacturer for a list price of $42,000, minus trade discounts of 30/20/15. Calculate the amount of the trade discount on the purchase." ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-90b20470c42e748c523c5324901cf1cc999f158e7566e62948b34316fc2bb009
An analog clock has two hands that can move independently. Initially, both hands point to the number 12. The clock performs a sequence of 144 hand movements such that on each movement, one of the two hands moves clockwise to the next number on the clock while the other hand does not move. Let $N$ be the number of seque...
[ "608" ]
[ "An analog clock has two hands that can move independently. Initially, both hands point to the number 12. The clock performs a sequence of 144 hand movements such that on each movement, one of the two hands moves clockwise to the next number on the clock while the other hand does not move. Let $N$ be the number of ...
[ "aops_c5_contests_amp_programs" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-b688d2faf4b316a7e94960bba410a8de21000ace613a35bcb5f1ee4ce9f8f5ea
An ancient Roman clock is divided into 18 sections marked with Roman numerals. The clock is broken into 5 pieces such that the sum of the numbers on each piece is the same. Show how the clock could be broken into these 5 pieces.
[ "No solution exists as the total sum (171) is not divisible by 5." ]
[ "An ancient Roman clock is divided into 18 sections marked with Roman numerals. The clock is broken into 5 pieces such that the sum of the numbers on each piece is the same. Show how the clock could be broken into these 5 pieces." ]
[ "aops_c4_high_school_math" ]
[ "additional_problems", "genselect" ]
{ "additional_problems": 1, "genselect": 2 }
3
0
0
omr-ws-24736f59339dd31e9252a36b32a41fd0a3b8cef7493fd3d3ac0306187892b998
An ancient human tribe had a hierarchical system where there existed one chief with 2 supporting chiefs (supporting chief A and supporting chief B), each of whom had 2 equal, inferior officers. If the tribe at one point had 10 members, what is the number of different ways to choose the leadership of the tribe? That is,...
[ "151200" ]
[ "An ancient human tribe had a hierarchical system where there existed one chief with 2 supporting chiefs (supporting chief A and supporting chief B), each of whom had 2 equal, inferior officers. If the tribe at one point had 10 members, what is the number of different ways to choose the leadership of the tribe? Th...
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-f5a148bfe0f4041eb0fbcaa3da4c41f50bca9bc209dec4a4c1aff92e2558d83f
An and Bo play a card game with a set of 2n cards. Each card has a positive integer written on it. The cards are shuffled and arranged in a row, facing up. An starts first and can take one card from either end of the row. They continue to take cards from either end, alternating turns, until Bo takes the last card. An d...
[ "n^2" ]
[ "An and Bo play a card game with a set of 2n cards. Each card has a positive integer written on it. The cards are shuffled and arranged in a row, facing up. An starts first and can take one card from either end of the row. They continue to take cards from either end, alternating turns, until Bo takes the last card....
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 6, "genselect": 5 }
11
0
0
omr-ws-36d1b1f9fb5a742978dde8e4f06a6e3ddeedfd0ce1f2039cf155060c01ef0927
An angle $BAC$ of $60^\circ$ is taken in a plane $P$. The distances from a point $S$ to the vertex $A$, the side $AB$ and the side $AC$ are respectively 25 cm, 7 cm and 20 cm. Find the distance between the point $S$ and the plane $P$.
[ "\\(\\sqrt{37}\\) cm" ]
[ "An angle $BAC$ of $60^\\circ$ is taken in a plane $P$. The distances from a point $S$ to the vertex $A$, the side $AB$ and the side $AC$ are respectively 25 cm, 7 cm and 20 cm. Find the distance between the point $S$ and the plane $P$." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-e9831995c3f7b8a50d2c629b202b640460e54aa4a8993c038d641bb912639ed0
An angle $x$ is chosen at random from the interval $0^\circ < x < 90^\circ.$ Let $p$ be the probability that the numbers $\sin^2 x, \cos^2 x,$ and $\sin x \cos x$ are not the lengths of the sides of a triangle. Given that $p = d/n,$ where $d$ is the number of degrees in $\text{arctan}$ $m$ and $m$ and $n$ are positive ...
[ "092" ]
[ "An angle $x$ is chosen at random from the interval $0^\\circ < x < 90^\\circ.$ Let $p$ be the probability that the numbers $\\sin^2 x, \\cos^2 x,$ and $\\sin x \\cos x$ are not the lengths of the sides of a triangle. Given that $p = d/n,$ where $d$ is the number of degrees in $\\text{arctan}$ $m$ and $m$ and ...
[ "MATH_training_set" ]
[ "genselect" ]
{ "genselect": 8 }
8
0
0
omr-ws-a13de47d963f7cb01b4c6bc52d2d686826db10c9046de3cae59933482845ee3f
An angle \( \alpha \) satisfies \( 0 < \alpha < \frac{\pi}{4} \) and the equation \( \tan \left(\frac{\pi}{2} - \alpha \right) - \tan \alpha = 1 \). Find the values of \( \tan \alpha \) and \( \sin 2\alpha \).
[ "\\( \\tan \\alpha = \\frac{-1 + \\sqrt{5}}{2} \\), \\( \\sin 2\\alpha = \\frac{2\\sqrt{5}}{5} \\)" ]
[ "An angle \\( \\alpha \\) satisfies \\( 0 < \\alpha < \\frac{\\pi}{4} \\) and the equation \\( \\tan \\left(\\frac{\\pi}{2} - \\alpha \\right) - \\tan \\alpha = 1 \\). Find the values of \\( \\tan \\alpha \\) and \\( \\sin 2\\alpha \\)." ]
[ "aops_c4_high_school_math" ]
[ "tir" ]
{ "tir": 29 }
29
0
0
omr-ws-b9e2a7c79dffdce5499bef80fba932b6d5558bed84b60b32c3522d345cd90222
An angle \(\angle BAC\) is said to be "laceable" if distinct points \(X_1, X_2, \ldots, X_{2n}\) can be found such that: - \(X_{2k-1}\) is on \(AC\) for each value of \(k\), - \(X_{2k}\) is on \(AB\) for each value of \(k\), - \(AX_1 = X_1X_2 = X_2X_3 = \ldots = X_{2n-1}X_{2n} = X_{2n}A\). Determine the number of lacea...
[ "1" ]
[ "An angle \\(\\angle BAC\\) is said to be \"laceable\" if distinct points \\(X_1, X_2, \\ldots, X_{2n}\\) can be found such that:\n- \\(X_{2k-1}\\) is on \\(AC\\) for each value of \\(k\\),\n- \\(X_{2k}\\) is on \\(AB\\) for each value of \\(k\\),\n- \\(AX_1 = X_1X_2 = X_2X_3 = \\ldots = X_{2n-1}X_{2n} = X_{2n}A\\)...
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 6, "genselect": 4 }
10
0
0
omr-ws-87dd38da698b132e264d1e12f0c85961642e30d8aac095fd50a6d51006e0ced4
An angle bisector $AD$ is drawn in triangle $ABC$. On the side $AB$, point $M$ is marked so that $MD \parallel AC$ and $\angle MDA = \angle MDB$. Find the length of segment $DC$ if $AD = 5$.
[ "5" ]
[ "An angle bisector $AD$ is drawn in triangle $ABC$. On the side $AB$, point $M$ is marked so that $MD \\parallel AC$ and $\\angle MDA = \\angle MDB$. Find the length of segment $DC$ if $AD = 5$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 14 }
14
0
0
omr-ws-1434baf101e075c95d27e443a315b1417b57ec7425f81f2a751f7b9ad1ffb2d3
An angle bisector AC divides a trapezoid ABCD into two similar triangles ABC and ACD. Find the perimeter of this trapezoid if the leg AB = 9 cm and the leg CD = 12 cm.
[ "\\( 46 \\) cm or \\( 33 + 6\\sqrt{3} \\) cm" ]
[ "An angle bisector AC divides a trapezoid ABCD into two similar triangles ABC and ACD. Find the perimeter of this trapezoid if the leg AB = 9 cm and the leg CD = 12 cm." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 13, "genselect": 3, "tir": 7 }
23
0
0
omr-ws-3809fba322d0e08bf8bf743ec1d7c8fe22aff1f6f348ec950de2ab74669dfe17
An angle is given in a plane. Using only a compass, one must determine: (a) if this angle is acute. Find the minimal number of circles one must draw to be sure. (b) if this angle equals \(31^\circ\). (One may draw as many circles as one needs).
[ "\\text{No}" ]
[ "An angle is given in a plane. Using only a compass, one must determine:\n(a) if this angle is acute. Find the minimal number of circles one must draw to be sure.\n(b) if this angle equals \\(31^\\circ\\). (One may draw as many circles as one needs)." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-ae6ee5fda79fab12208362637432be42a381a63a9947f8dfa851e67b7aa87c6f
An angle of depression from the top of a 75-foot tall lighthouse to a ship in the water is 31 degrees. What is the length of the rope attached directly from the ship to the top of the lighthouse?
[ "146" ]
[ "An angle of depression from the top of a 75-foot tall lighthouse to a ship in the water is 31 degrees. What is the length of the rope attached directly from the ship to the top of the lighthouse?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 15, "genselect": 8, "tir": 23 }
46
0
0
omr-ws-271a030ef2fba57a955cd6d9e3910417f2336c80f3c7e9d6799d3d902ffaae80
An angle referred to different units has a ratio of 8:5. If the smaller unit is 2 degrees, find the greater unit.
[ "3.2 degrees" ]
[ "An angle referred to different units has a ratio of 8:5. If the smaller unit is 2 degrees, find the greater unit." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 14, "tir": 17 }
31
0
0
omr-ws-d602514f2d866ce79020faab4cfa8fe22c192852ba31ecd4990c1e11af6a43e5
An angle with a vertex at point \( O \) and a circle inside it. Using a compass and straightedge, construct points \( A \) and \( B \) on the sides of the angle so that the triangle \( OAB \) contains a circle inside it and has the smallest perimeter among all such triangles.
[ "OAB" ]
[ "An angle with a vertex at point \\( O \\) and a circle inside it. Using a compass and straightedge, construct points \\( A \\) and \\( B \\) on the sides of the angle so that the triangle \\( OAB \\) contains a circle inside it and has the smallest perimeter among all such triangles." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 2, "genselect": 1 }
3
0
0
omr-ws-f81ec19ea4508372838da227a1461c7fd5069780ab5666985f3c36224bf3c926
An angler casts a fishing line so that the sinker is projected with a speed of \(V\) m/s from a point 5 metres above a flat sea. The angle of projection is \(\theta\). Assume the equations of motion are \(x'' = 0\) and \(y'' = -g\). i) Let \((x, y)\) be the position of the sinker at time \(t\) seconds after the cast, a...
[ "\\dfrac{121}{8}" ]
[ "An angler casts a fishing line so that the sinker is projected with a speed of \\(V\\) m/s from a point 5 metres above a flat sea. The angle of projection is \\(\\theta\\). Assume the equations of motion are \\(x'' = 0\\) and \\(y'' = -g\\).\n\ni) Let \\((x, y)\\) be the position of the sinker at time \\(t\\) seco...
[ "aops_c7_college_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-6e82e86d2620d0d7b585200d05698aaab0f94b73aeaf89c4bbe0e0a7b3aaf043
An annulus is the region between two concentric circles. Inside this annulus, twelve equal white semicircles are placed such that their diameters lie along the diameters of the outer circle. The rest of the annulus is black. What fraction of the annulus is black?
[ "\\(\\frac{1}{4}\\)" ]
[ "An annulus is the region between two concentric circles. Inside this annulus, twelve equal white semicircles are placed such that their diameters lie along the diameters of the outer circle. The rest of the annulus is black. What fraction of the annulus is black?" ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-d347004540082546105e1ea33b48be0a7a0dedc662bcc0bb1d1a7f46bc435fbe
An ant can crawl from any cell to any of the four neighboring cells that have a common side with it (on the same face or across an edge). Help the ant go around all the cells, visiting each of them exactly once, on a Rubik's cube where each face is divided into $16$ cells ($4 \times 4$).
[ "\\text{Yes}" ]
[ "An ant can crawl from any cell to any of the four neighboring cells that have a common side with it (on the same face or across an edge). Help the ant go around all the cells, visiting each of them exactly once, on a Rubik's cube where each face is divided into $16$ cells ($4 \\times 4$)." ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-08089142b150936eb4731a393baa7c24f51561bb344e8ebab2e7d63f5fa4116c
An ant can crawl from any cell to any of the four neighboring cells that have a common side with it (on the same face or across an edge). Help the ant go around all the cells, visiting each of them exactly once, on a Rubik's cube where each face is divided into $25$ cells ($5 \times 5$).
[ "\\text{Yes}" ]
[ "An ant can crawl from any cell to any of the four neighboring cells that have a common side with it (on the same face or across an edge). Help the ant go around all the cells, visiting each of them exactly once, on a Rubik's cube where each face is divided into $25$ cells ($5 \\times 5$)." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 15, "genselect": 1 }
16
0
0
omr-ws-6d9825942489dc11c1facd0ce41ae0a43985a3c311a37c20df20d9e60b3aace2
An ant can crawl from any cell to any of the four neighboring cells that have a common side with it (on the same face or across an edge). Help the ant go around all the cells, visiting each of them exactly once, on a Rubik's cube where each face is divided into $9$ cells ($3 \times 3$).
[ "\\text{Yes}" ]
[ "An ant can crawl from any cell to any of the four neighboring cells that have a common side with it (on the same face or across an edge). Help the ant go around all the cells, visiting each of them exactly once, on a Rubik's cube where each face is divided into $9$ cells ($3 \\times 3$)." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 15, "genselect": 1 }
16
0
0
omr-ws-e1ca75021c30a38f623ce4ccee1712837a8744e1ce7ae5b94208212515b6de68
An ant crawls along the edges of an octahedron. It will not turn around on an edge until it reaches a vertex and can move to another edge after reaching a vertex. If the ant reaches one vertex 2014 times and each of the other 5 vertices \( n \) times, what is the minimum possible value of \( n \)?
[ "671" ]
[ "An ant crawls along the edges of an octahedron. It will not turn around on an edge until it reaches a vertex and can move to another edge after reaching a vertex. If the ant reaches one vertex 2014 times and each of the other 5 vertices \\( n \\) times, what is the minimum possible value of \\( n \\)?" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 4, "genselect": 5 }
9
0
0
omr-ws-122e9fc38a2b04243e54ee1008a663001caadb9cf3616325138b9303e727c4e2
An ant crawls along the surface of a cube with side length $\sqrt{20}$, from vertex $A$ to vertex $B$. $A$ and $B$ are vertices that form an interior diagonal of the cube, and they are not shared by any one face. What is the shortest possible length of the ant’s path?
[ "10" ]
[ "An ant crawls along the surface of a cube with side length $\\sqrt{20}$, from vertex $A$ to vertex $B$. $A$ and $B$ are vertices that form an interior diagonal of the cube, and they are not shared by any one face. What is the shortest possible length of the ant’s path?" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-35c0ddffefa8527a48dbb46670b27e63a9741c3a042aeee0f5d8a7b8bdb1449f
An ant crawls from the bottom left corner A to the top right corner B of a 4x5 square grid. Each step the ant takes moves it along one edge of a unit square to an adjacent vertex. How many ways can the ant travel from A to B in exactly 11 steps?
[ "5082" ]
[ "An ant crawls from the bottom left corner A to the top right corner B of a 4x5 square grid. Each step the ant takes moves it along one edge of a unit square to an adjacent vertex. How many ways can the ant travel from A to B in exactly 11 steps?" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 3 }
3
0
0
omr-ws-d62a3221749d4c437d59b073c00dd6183f007dcd4e1679cdcd7c67962cabbe20
An ant crawls on a table with constant speed in one direction, then every 15 minutes changes direction by turning 90 degrees. Let $T$ be the time in hours after which the ant returns to its original position for the first time. Find the value of $T$.
[ "1" ]
[ "An ant crawls on a table with constant speed in one direction, then every 15 minutes changes direction by turning 90 degrees. Let $T$ be the time in hours after which the ant returns to its original position for the first time. Find the value of $T$." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-c57d262ae39fc6b1b5afb1570c9660f13e18c1e3e81852bd6c1084ae3aeda501
An ant crawls on the surface of a 3x3x3 large cube, made up of smaller cubes, from one corner to the opposite corner. The ant walks only along the edges of the small cubes and covers exactly nine of these edges. How many different paths can the ant take to reach its goal?
[ "384" ]
[ "An ant crawls on the surface of a 3x3x3 large cube, made up of smaller cubes, from one corner to the opposite corner. The ant walks only along the edges of the small cubes and covers exactly nine of these edges. How many different paths can the ant take to reach its goal?" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect", "tir" ]
{ "cot": 14, "genselect": 7, "tir": 19 }
40
0
0
omr-ws-29c500493f98d8694b7cc055d64b9af2752e7df6086ffac21f42d5bbd8219941
An ant crawls on the surface of a cube with an edge length of $1$ cm. It wants to visit all the edges of the cube and return to the starting point. Find the smallest possible path length.
[ "13" ]
[ "An ant crawls on the surface of a cube with an edge length of $1$ cm. It wants to visit all the edges of the cube and return to the starting point. Find the smallest possible path length." ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-baff751472eb570fea770bbc8887510324a31941ed07cea822283d61d3107b13
An ant has one sock and one shoe for each of its six legs. In how many different orders can the ant put on its socks and shoes, assuming that, on each leg, the sock must be put on before a shoe?
[ "132" ]
[ "An ant has one sock and one shoe for each of its six legs. In how many different orders can the ant put on its socks and shoes, assuming that, on each leg, the sock must be put on before a shoe?" ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-811fd5003916e10f7b633b2e47991b945c8658d2733c8e409a6527c65806eb24
An ant is about to step on food that is 10 steps in front of it. The ant can only step forward a multiple of three steps and the rest must step backwards. Determine how many steps the ant takes to reach the food, if it has to take no more than twenty steps.
[ "6" ]
[ "An ant is about to step on food that is 10 steps in front of it. The ant can only step forward a multiple of three steps and the rest must step backwards. Determine how many steps the ant takes to reach the food, if it has to take no more than twenty steps." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 3, "genselect": 5 }
8
0
0
omr-ws-995daa195f298123bba45a1e4c3f202c90ae73157571f3ed178094acf4787b07
An ant is allowed to crawl either along the edges of a single cube, or along the diagonals of its faces. He must crawl from one vertex to the opposite without visiting any vertex twice. What is the largest number of diagonals such a path can include?
[ "2" ]
[ "An ant is allowed to crawl either along the edges of a single cube, or along the diagonals of its faces. He must crawl from one vertex to the opposite without visiting any vertex twice. What is the largest number of diagonals such a path can include?" ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-6129bb03cc9a0efd67a7d848ffa159622ca43174e2c3436982376684f3d93981
An ant is at $(2020, 2019)$ in the coordinate plane. Every minute, it can perform one of the following 9 actions from $(x,y)$: - Stay at $(x,y)$ - Move to $(x, y + 1)$ - Move to $(x + 1, y + 1)$ - Move to $(x + 1, y)$ - Move to $(x + 1, y - 1)$ - Move to $(x, y - 1)$ - Move to $(x - 1, y - 1)$ - Move to $(x - 1, y)$ - ...
[ "19" ]
[ "An ant is at $(2020, 2019)$ in the coordinate plane. Every minute, it can perform one of the following 9 actions from $(x,y)$:\n- Stay at $(x,y)$\n- Move to $(x, y + 1)$\n- Move to $(x + 1, y + 1)$\n- Move to $(x + 1, y)$\n- Move to $(x + 1, y - 1)$\n- Move to $(x, y - 1)$\n- Move to $(x - 1, y - 1)$\n- Move to $(...
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-33c0e2708584f86e074b7caef2e3d372871ff0053aa74aa52dd0537d46e14a02
An ant is at $(2020, 2019)$ in the coordinate plane. Every minute, starting with the first minute, she will do one of the following 9 actions from $(x, y)$: - Stay at $(x, y)$ - Move to $(x, y+1)$ - Move to $(x+1, y+1)$ - Move to $(x+1, y)$ - Move to $(x+1, y-1)$ - Move to $(x, y-1)$ - Move to $(x-1, y-1)$ - Move to $(...
[ "19" ]
[ "An ant is at $(2020, 2019)$ in the coordinate plane. Every minute, starting with the first minute, she will do one of the following 9 actions from $(x, y)$:\n- Stay at $(x, y)$\n- Move to $(x, y+1)$\n- Move to $(x+1, y+1)$\n- Move to $(x+1, y)$\n- Move to $(x+1, y-1)$\n- Move to $(x, y-1)$\n- Move to $(x-1, y-1)$\...
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-6f07a8685b11500c5c789c5696ef2828ae9937b3313541e8862af78c4f3228a0
An ant is at a vertex of a cube. Every 10 minutes it moves to an adjacent vertex along an edge. If $N$ is the number of one-hour journeys that end at the starting vertex, find the sum of the squares of the digits of $N$.
[ "74" ]
[ "An ant is at a vertex of a cube. Every 10 minutes it moves to an adjacent vertex along an edge. If $N$ is the number of one-hour journeys that end at the starting vertex, find the sum of the squares of the digits of $N$." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 15, "tir": 23 }
38
0
0
omr-ws-2244cfd15907a575231fa8156479e0a2b5b8e4782439e7d5d1ab2b8193369269
An ant is at a vertex of a cube. Every 10 minutes it moves to an adjacent vertex along an edge. If \( N \) is the number of one-hour journeys that end at the starting vertex, find the sum of the squares of the digits of \( N \).
[ "74" ]
[ "An ant is at a vertex of a cube. Every 10 minutes it moves to an adjacent vertex along an edge. If \\( N \\) is the number of one-hour journeys that end at the starting vertex, find the sum of the squares of the digits of \\( N \\)." ]
[ "aops_c4_high_school_math", "c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 14, "genselect": 8, "tir": 28 }
50
0
0
omr-ws-1c466a10538986944a8aeea9c807cfa24d8d79f59aa7de1f8e56d5a9522bf55d
An ant is at one corner of a unit cube. If the ant must travel on the box’s surface, what is the shortest distance the ant must crawl to reach the opposite corner of the cube? The distance can be written in the form $\sqrt{a}$, where $a$ is a positive integer. Compute $a$.
[ "5" ]
[ "An ant is at one corner of a unit cube. If the ant must travel on the box’s surface, what is the shortest distance the ant must crawl to reach the opposite corner of the cube? The distance can be written in the form $\\sqrt{a}$, where $a$ is a positive integer. Compute $a$." ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 15 }
15
0
0
omr-ws-da2e8591d171e255456c9b71f3b163bf83957ec20fa1708fdc4c2b3d168d2b5e
An ant is at point A and wants to reach point B by only moving in the directions $\to$, $\uparrow$, or $\nearrow$. How many different paths are possible given the grid below? [asy]usepackage("tikz");label("\begin{tikzpicture} \coordinate[label=below:$A$] (A) at (0,0); \coordinate[label=above:$B$] (B) at (3,5); \draw (A...
[ "231" ]
[ "An ant is at point A and wants to reach point B by only moving in the directions $\\to$, $\\uparrow$, or $\\nearrow$. How many different paths are possible given the grid below?\n[asy]usepackage(\"tikz\");label(\"\\begin{tikzpicture}\n\\coordinate[label=below:$A$] (A) at (0,0);\n\\coordinate[label=above:$B$] (B) a...
[ "c4_high_school_math" ]
[ "tir" ]
{ "tir": 1 }
1
0
0
omr-ws-60c5826893e4689af4313389f6ae08f186e7c93dbf37d46f44c18300e13c06b7
An ant is at the midpoint of a slant line on the outside wall of a conical glass with a slant height of 21 and a radius of 14 at the top rim. The ant sees a honey drop diametrically opposite to it on the inside wall of the glass. What is the integer part of the shortest distance the ant should crawl to reach the honey ...
[ "27" ]
[ "An ant is at the midpoint of a slant line on the outside wall of a conical glass with a slant height of 21 and a radius of 14 at the top rim. The ant sees a honey drop diametrically opposite to it on the inside wall of the glass. What is the integer part of the shortest distance the ant should crawl to reach the h...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 9, "genselect": 3 }
12
0
0
omr-ws-f60d4f9b7e2144c36dd8e19082a46c3cd4d2a794a254e1ce0b951f85fac594b7
An ant is crawling along the coordinate plane. Each move, it moves one unit up, down, left, or right with equal probability. If it starts at $(0,0)$, what is the probability that it will be at either $(2,1)$ or $(1,2)$ after 6 moves?
[ "0" ]
[ "An ant is crawling along the coordinate plane. Each move, it moves one unit up, down, left, or right with equal probability. If it starts at $(0,0)$, what is the probability that it will be at either $(2,1)$ or $(1,2)$ after 6 moves?" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-73ff682122f3b1c096d6970f85f46eecc0ed3d735744a4e5c2842afe0de02f61
An ant is crawling at a rate of 48 cm per minute along a strip of rubber which is initially one meter long and one cm wide. At the end of each minute, the strip is stretched an additional one meter uniformly. If the ant starts at one end of the strip, find the number of minutes until it reaches the other end. Assume th...
[ "4" ]
[ "An ant is crawling at a rate of 48 cm per minute along a strip of rubber which is initially one meter long and one cm wide. At the end of each minute, the strip is stretched an additional one meter uniformly. If the ant starts at one end of the strip, find the number of minutes until it reaches the other end. Assu...
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-4e0e83f53c4f427cd0b9664a8492e96dae369189b5a5bb17ac96b1ba21b81240
An ant is crawling on the edges of a cube, starting from one vertex. What is the maximum number of edges the ant can traverse if it can go through each edge only once?
[ "9" ]
[ "An ant is crawling on the edges of a cube, starting from one vertex. What is the maximum number of edges the ant can traverse if it can go through each edge only once?" ]
[ "aops_c4_high_school_math", "c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 2 }
18
0
0
omr-ws-fcf51948638fdf838f14bae0765bc5bfc7db3dc59e0aa6341b1b9eb6801c8066
An ant is going from $(0,0)$ to $(50,50)$. At each step, the ant can move from $(a,b)$ to $(a+1,b)$, $(a,b+1)$, or $(a+1,b+1)$. The path must not contain any right angles. Determine the number of such paths.
[ "3^{49}" ]
[ "An ant is going from $(0,0)$ to $(50,50)$. At each step, the ant can move from $(a,b)$ to $(a+1,b)$, $(a,b+1)$, or $(a+1,b+1)$. The path must not contain any right angles. Determine the number of such paths." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 4, "genselect": 7 }
11
0
0
omr-ws-7d39361510118d85ae5348fdac1ff6362753a7ccaf9fbc4d46427dcfdee6a98e
An ant is located at the center of one face of a regular octahedron with side length 6. The ant walks to the center of the face directly opposite to its starting face. Find the square of the shortest distance the ant travels, denoted as $m$.
[ "84" ]
[ "An ant is located at the center of one face of a regular octahedron with side length 6. The ant walks to the center of the face directly opposite to its starting face. Find the square of the shortest distance the ant travels, denoted as $m$." ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0