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omr-ws-5a5d79c0c62d6a7205090903005ad42942f9d6944b3a600cb834b71a3c110704
Three different numbers are chosen such that when each of the numbers is added to the average of the remaining two, the numbers 65, 69, and 76 result. Find the average of the three original numbers.
[ "35" ]
[ "Three different numbers are chosen such that when each of the numbers is added to the average of the remaining two, the numbers 65, 69, and 76 result. Find the average of the three original numbers." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 15, "tir": 18 }
33
0
0
omr-ws-fa71be7155c4f1fe5343d7cd7a1f4c70fee5a60f260e45ad4f837286741e395b
Three different oblique ellipses $\mathcal{E}_1, \mathcal{E}_2, \mathcal{E}_3$ and three different straight ellipses $\mathcal{F}_1, \mathcal{F}_2, \mathcal{F}_3$ are such that for every permutation $(i,j,k)$ of the numbers $(1,2,3)$, the ellipses $\mathcal{E}_i, \mathcal{E}_j, \mathcal{F}_k$ have 4 common points. Let ...
[ "1" ]
[ "Three different oblique ellipses $\\mathcal{E}_1, \\mathcal{E}_2, \\mathcal{E}_3$ and three different straight ellipses $\\mathcal{F}_1, \\mathcal{F}_2, \\mathcal{F}_3$ are such that for every permutation $(i,j,k)$ of the numbers $(1,2,3)$, the ellipses $\\mathcal{E}_i, \\mathcal{E}_j, \\mathcal{F}_k$ have 4 commo...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 3, "genselect": 3 }
6
0
0
omr-ws-c29b804fc0514ae05e1c5ed8cb5de3cbf701d15585fdb4f2b3fa25dac0b5c997
Three different palindromic numbers between 10 and 1000 are chosen such that their sum is also a palindrome. What is the maximum possible value of the product of these three numbers? - The numbers cannot start with 0. - A palindrome is a number that reads the same backward as forward. Examples: 11, 101, 292.
[ "538657232" ]
[ "Three different palindromic numbers between 10 and 1000 are chosen such that their sum is also a palindrome. What is the maximum possible value of the product of these three numbers?\n\n- The numbers cannot start with 0.\n- A palindrome is a number that reads the same backward as forward. Examples: 11, 101, 292." ...
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-1a9c0336e6ef317d31f801175ed19545862e22d45b85c4e9e319a46ec6ebe657
Three different points \( A, B, \) and \( C \) lie on a circle with center \( M \) such that \( |AB| = |BC| \). Point \( D \) is inside the circle such that \( \triangle BCD \) is equilateral. Let \( F \) be the second intersection of \( AD \) with the circle. If the radius of the circle is 10, calculate the length of ...
[ "10" ]
[ "Three different points \\( A, B, \\) and \\( C \\) lie on a circle with center \\( M \\) such that \\( |AB| = |BC| \\). Point \\( D \\) is inside the circle such that \\( \\triangle BCD \\) is equilateral. Let \\( F \\) be the second intersection of \\( AD \\) with the circle. If the radius of the circle is 10, ca...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 7 }
7
0
0
omr-ws-3e8782d20310e758650dc512087b72addb254516918d6b1b45b3117c79459ea1
Three different points are randomly selected from the vertices of a regular $2n$-gon. Let $p_n$ be the probability that the triangle formed by these points is acute-angled. Calculate $\lim_{n \to \infty} p_n$.
[ "\\(\\frac{1}{4}\\)" ]
[ "Three different points are randomly selected from the vertices of a regular $2n$-gon. Let $p_n$ be the probability that the triangle formed by these points is acute-angled. Calculate $\\lim_{n \\to \\infty} p_n$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 18 }
34
0
0
omr-ws-bdd932e6d6fc5b5b24c2b2c27068bff4d2b3a92e71ca484d7dc029993bddbbff
Three different shades of blue and three different greens can be arranged in a 3x3 box such that no two offerings of the same color follow immediately straight or diagonally. How many ways can this be done?
[ "0" ]
[ "Three different shades of blue and three different greens can be arranged in a 3x3 box such that no two offerings of the same color follow immediately straight or diagonally. How many ways can this be done?" ]
[ "aops_c5_contests_amp_programs" ]
[ "cot", "genselect" ]
{ "cot": 3, "genselect": 2 }
5
0
0
omr-ws-6cb1d38baeccf360025f1e8e5998f74b28f7da799be1a6e881e4f67b6e2c6ce5
Three digits \( a, b, \) and \( c \) are selected from the set \( \{0, 1, 2, 3, 4, 5, 6, 7, 8, 9\} \), one at a time, with repetition allowed. What is the probability that \( a > b > c \)?
[ "\\(\\frac{2}{15}\\)" ]
[ "Three digits \\( a, b, \\) and \\( c \\) are selected from the set \\( \\{0, 1, 2, 3, 4, 5, 6, 7, 8, 9\\} \\), one at a time, with repetition allowed. What is the probability that \\( a > b > c \\)?" ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-4c17592079ae3d7383afdc7e230e979baf03ee173a421e9d01fb2bcb11c8cc77
Three digits were written to the end of a positive integer \( A \). The resulting number was equal to the sum of numbers from 1 to \( A \). Find all possible values of \( A \).
[ "1999" ]
[ "Three digits were written to the end of a positive integer \\( A \\). The resulting number was equal to the sum of numbers from 1 to \\( A \\). Find all possible values of \\( A \\)." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-b9749e4e19db1dd21adba37f4cfa952b7214890fd0142fe1a38d0d5b5aa762e5
Three disks of diameter \( d \) are touching a sphere at their centers. Each disk also touches the other two disks. Determine the radius \( R \) of the sphere such that the axis of the whole figure forms an angle of \( 60^\circ \) with the line connecting the center of the sphere to the point on the disks that is farth...
[ "\\( R = d \\left(\\sqrt{3} + \\frac{3}{2}\\right) \\)" ]
[ "Three disks of diameter \\( d \\) are touching a sphere at their centers. Each disk also touches the other two disks. Determine the radius \\( R \\) of the sphere such that the axis of the whole figure forms an angle of \\( 60^\\circ \\) with the line connecting the center of the sphere to the point on the disks t...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-5e3d5e97b6e7b7c36c63847cee55e4c667ed67fedafdc4d4eff3aff36b9a65e0
Three distinct circles $\omega_1$, $\omega_2$, and $\omega_3$ all pass through a common point $P$. There exist points $A$, $B$, and $C$ distinct from $P$ such that $A \in \omega_1 \cap \omega_2$, $B \in \omega_2 \cap \omega_3$, and $C \in \omega_3 \cap \omega_1$. Define $Q$ to be the reflection of $P$ across $BC$. It i...
[ "44" ]
[ "Three distinct circles $\\omega_1$, $\\omega_2$, and $\\omega_3$ all pass through a common point $P$. There exist points $A$, $B$, and $C$ distinct from $P$ such that $A \\in \\omega_1 \\cap \\omega_2$, $B \\in \\omega_2 \\cap \\omega_3$, and $C \\in \\omega_3 \\cap \\omega_1$. Define $Q$ to be the reflection of $...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-94548d126736bf4239199fa285424ac0f9395e051dd0e84c1fe4d54cd6aaa557
Three distinct circles $\omega_1, \omega_2, \omega_3$ intersect to form three common chords that are concurrent at a point $X$. Consider two distinct circles $\alpha_1$ and $\alpha_2$ which are internally tangent to all three circles $\omega_1, \omega_2, \omega_3$. Let $O_1$ and $O_2$ be the centers of $\alpha_1$ and $...
[ "(5, 6)" ]
[ "Three distinct circles $\\omega_1, \\omega_2, \\omega_3$ intersect to form three common chords that are concurrent at a point $X$. Consider two distinct circles $\\alpha_1$ and $\\alpha_2$ which are internally tangent to all three circles $\\omega_1, \\omega_2, \\omega_3$. Let $O_1$ and $O_2$ be the centers of $\\...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-51c4d10c0bbbe13205268c5fcd1c0075409c3987e763b50c7a9ff195816fd292
Three distinct circles ($\Gamma_1, \Gamma_2, \Gamma_3$) intersect at exactly two distinct points $A$ and $B$. A straight line passing through $A$ intersects $\Gamma_1, \Gamma_2, \Gamma_3$ at points $D, E, F$ respectively. Lines $g_1, g_2, g_3$ are drawn tangent to $\Gamma_1, \Gamma_2, \Gamma_3$ at points $D, E, F$ resp...
[ "no_valid_answer_found" ]
[ "Three distinct circles ($\\Gamma_1, \\Gamma_2, \\Gamma_3$) intersect at exactly two distinct points $A$ and $B$. A straight line passing through $A$ intersects $\\Gamma_1, \\Gamma_2, \\Gamma_3$ at points $D, E, F$ respectively. Lines $g_1, g_2, g_3$ are drawn tangent to $\\Gamma_1, \\Gamma_2, \\Gamma_3$ at points ...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-693b490faa6ecb4645f7483a81a8b9a4db553a938d9b4f9e677a48e93f3e4da7
Three distinct integers \(a\), \(b\), and \(c\) are chosen at random. Calculate the sum of all possible distinct prime factors of the greatest common divisor of the expressions \(a^3 b - b^3 a\) and \(b^3 c - c^3 b\) for any such choice of \(a\), \(b\), and \(c\).
[ "5" ]
[ "Three distinct integers \\(a\\), \\(b\\), and \\(c\\) are chosen at random. Calculate the sum of all possible distinct prime factors of the greatest common divisor of the expressions \\(a^3 b - b^3 a\\) and \\(b^3 c - c^3 b\\) for any such choice of \\(a\\), \\(b\\), and \\(c\\)." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 5 }
5
0
0
omr-ws-cb556bc880757c0594642d5cb2a0b706265f835c42a0cbef7d44acafe0412fb4
Three distinct integers \(a\), \(b\), and \(c\) are chosen at random. Let \(P\) be the product of all distinct prime factors of \(a^3b - ab^3\) and \(a^3c - ac^3\). Find the value of \(P\).
[ "6" ]
[ "Three distinct integers \\(a\\), \\(b\\), and \\(c\\) are chosen at random. Let \\(P\\) be the product of all distinct prime factors of \\(a^3b - ab^3\\) and \\(a^3c - ac^3\\). Find the value of \\(P\\)." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-39d0e113c09ecfd71cebb48e9ffc30bf30d11d95bd82f09a97cded6af6796e54
Three distinct integers \(a\), \(b\), and \(c\) are chosen from \(0\) to \(1023 = 2^{10} - 1\) inclusive. What is the probability that \(f(a) + f(b) + f(c) = f(a + b + c)\)?
[ "\\dfrac{1}{1024}" ]
[ "Three distinct integers \\(a\\), \\(b\\), and \\(c\\) are chosen from \\(0\\) to \\(1023 = 2^{10} - 1\\) inclusive. What is the probability that \\(f(a) + f(b) + f(c) = f(a + b + c)\\)?" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 13 }
13
0
0
omr-ws-674eee70a0a300f417045a0eceacfd34e67b3b23def157e99feec54e363d3ac5
Three distinct integers \(a\), \(b\), and \(c\) satisfy the following conditions: - \(abc = 17955\), - \(a\), \(b\), and \(c\) form an arithmetic sequence in that order, - \((3a + b)\), \((3b + c)\), and \((3c + a)\) form a geometric sequence in that order. What is the value of \(|a + b + c|\)?
[ "63" ]
[ "Three distinct integers \\(a\\), \\(b\\), and \\(c\\) satisfy the following conditions:\n- \\(abc = 17955\\),\n- \\(a\\), \\(b\\), and \\(c\\) form an arithmetic sequence in that order,\n- \\((3a + b)\\), \\((3b + c)\\), and \\((3c + a)\\) form a geometric sequence in that order.\nWhat is the value of \\(|a + b + ...
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 15, "tir": 19 }
34
0
0
omr-ws-dc1b22b97e52623e146546c2da421ca0eff89de56c75abac614eef21f6165140
Three distinct integers are selected at random between $1$ and $2016$, inclusive. What is the probability $p$ that the product of the three integers is odd?
[ "\\( p < \\frac{1}{8} \\)" ]
[ "Three distinct integers are selected at random between $1$ and $2016$, inclusive. What is the probability $p$ that the product of the three integers is odd?" ]
[ "aops_c5_contests_amp_programs" ]
[ "cot", "genselect" ]
{ "cot": 8, "genselect": 2 }
10
0
0
omr-ws-b922490db9fbdbcfa2b7eb191370ddd4d2fb2524e2a322b3f715d305fe97ab3c
Three distinct integers form a geometric progression with a sum of 1387, and the common ratio is an integer. Find the sum of all possible distinct values for the largest term of the geometric progression.
[ "4142" ]
[ "Three distinct integers form a geometric progression with a sum of 1387, and the common ratio is an integer. Find the sum of all possible distinct values for the largest term of the geometric progression." ]
[ "aops_c4_high_school_math" ]
[ "tir" ]
{ "tir": 1 }
1
0
0
omr-ws-df00b71ab5deabe8c42925fec9adf1ca467beead739f885e775569e9e6f07e06
Three distinct natural numbers $p$, $q$, and $r$ are such that the average of any non-empty subset of $\{p, q, r\}$ is a prime number. Find the minimal possible value of $p + q + r$.
[ "51" ]
[ "Three distinct natural numbers $p$, $q$, and $r$ are such that the average of any non-empty subset of $\\{p, q, r\\}$ is a prime number. Find the minimal possible value of $p + q + r$." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 14, "genselect": 7, "tir": 24 }
45
0
0
omr-ws-569bea2386e226796f718de58b589b188d5011fbb46f982f9091e5190976ceee
Three distinct points $A$, $B$, and $N$ are marked on the line $l$, with $B$ lying between $A$ and $N$. For an arbitrary angle $\alpha \in (0,\frac{\pi}{2})$, points $C$ and $D$ are marked in the plane on the same side of $l$ such that $N$, $C$, and $D$ are collinear; $\angle NAD = \angle NBC = \alpha$; and $A$, $B$, $...
[ "A semicircle with radius $\\frac{AN \\cdot BN}{AN + BN}$." ]
[ "Three distinct points $A$, $B$, and $N$ are marked on the line $l$, with $B$ lying between $A$ and $N$. For an arbitrary angle $\\alpha \\in (0,\\frac{\\pi}{2})$, points $C$ and $D$ are marked in the plane on the same side of $l$ such that $N$, $C$, and $D$ are collinear; $\\angle NAD = \\angle NBC = \\alpha$; and...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-876b8b0396e2f08d50b4192e48c85cf5617513dae74ee29238c14b1cca422cec
Three distinct points $A, B$, and $C$ lie on a circle with center $O$, such that $\angle AOB$ and $\angle BOC$ each measure $60$ degrees. Point $P$ lies on chord $AC$ and triangle $BPC$ is drawn. If $P$ is chosen so that it maximizes the length of the altitude from $C$ to $BP$, determine the ratio $AP : PC$.
[ "1:2" ]
[ "Three distinct points $A, B$, and $C$ lie on a circle with center $O$, such that $\\angle AOB$ and $\\angle BOC$ each measure $60$ degrees. Point $P$ lies on chord $AC$ and triangle $BPC$ is drawn. If $P$ is chosen so that it maximizes the length of the altitude from $C$ to $BP$, determine the ratio $AP : PC$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 47, "tir": 9 }
56
0
0
omr-ws-b2c6802e4c07b4fbe5acfa71ae3d455df65efb6d35fbd524add69872dbd24de0
Three distinct points $A, B$, and $C$ lie on a circle with center $O$. The triangles $AOB$, $BOC$, and $COA$ have equal area. What are the possible measures of the angles of triangle $ABC$?
[ "\\(60^\\circ\\)" ]
[ "Three distinct points $A, B$, and $C$ lie on a circle with center $O$. The triangles $AOB$, $BOC$, and $COA$ have equal area. What are the possible measures of the angles of triangle $ABC$?" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 11, "genselect": 1 }
12
0
0
omr-ws-96e4d1af6329f86635dbeaf15d9170147699ab3b4efe26b74c6553c75020a2b4
Three distinct points \( A \), \( B \), and \( C \) are fixed on a line in this order. Let \( \Gamma \) be a circle passing through \( A \) and \( C \) whose center does not lie on the line \( AC \). Denote by \( P \) the intersection of the tangents to \( \Gamma \) at \( A \) and \( C \). Suppose \( \Gamma \) meets th...
[ "2" ]
[ "Three distinct points \\( A \\), \\( B \\), and \\( C \\) are fixed on a line in this order. Let \\( \\Gamma \\) be a circle passing through \\( A \\) and \\( C \\) whose center does not lie on the line \\( AC \\). Denote by \\( P \\) the intersection of the tangents to \\( \\Gamma \\) at \\( A \\) and \\( C \\). ...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-d54e8c2e57e9449025bf5899eba4982427247c3292d692de30b4bac5b376d1a9
Three distinct points \( A, B, C \) are found, in this order, on a line. Let \( G \) be a circle passing through \( A \) and \( C \) with its center outside the line \( AC \). Let \( P \) be the intersection point of the tangents to \( G \) drawn at points \( A \) and \( C \). Let \( Q \) be the intersection between \(...
[ "no_valid_answer_found" ]
[ "Three distinct points \\( A, B, C \\) are found, in this order, on a line. Let \\( G \\) be a circle passing through \\( A \\) and \\( C \\) with its center outside the line \\( AC \\). Let \\( P \\) be the intersection point of the tangents to \\( G \\) drawn at points \\( A \\) and \\( C \\). Let \\( Q \\) be th...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-e771afb2d3c8ce15d4107ad0b56f800358b87956fb47952a2a41ca706fc85fe0
Three distinct points \( A, B, C \) lie on a circle centered at point \( O \) with radius 1. If \( r \) is the inradius of \( \triangle ABC \), find the maximum possible value of \( r \).
[ "\\dfrac{1}{2}" ]
[ "Three distinct points \\( A, B, C \\) lie on a circle centered at point \\( O \\) with radius 1. If \\( r \\) is the inradius of \\( \\triangle ABC \\), find the maximum possible value of \\( r \\)." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-f2752678a21e78c17163e077683393edfe66ded9680b84a10a71d8588a9195ff
Three distinct points \( A, B, \) and \( N \) are marked on the line \( l \), with \( B \) lying between \( A \) and \( N \). For an arbitrary angle \( x \in (0, 90^\circ) \), points \( C \) and \( D \) are marked in the plane on the same side of \( l \) such that \( N, C, \) and \( D \) are collinear; \( \angle NAD = ...
[ "Circle with \\( MN \\) as the diameter." ]
[ "Three distinct points \\( A, B, \\) and \\( N \\) are marked on the line \\( l \\), with \\( B \\) lying between \\( A \\) and \\( N \\). For an arbitrary angle \\( x \\in (0, 90^\\circ) \\), points \\( C \\) and \\( D \\) are marked in the plane on the same side of \\( l \\) such that \\( N, C, \\) and \\( D \\) ...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-95c93e655f5511d623d65a60cccf96bd6980cc1d5224ec4b218e5318e9fb5de8
Three distinct points \(A, B,\) and \(C\) are collinear in that order. Let \(\omega\) be a circle passing through \(A\) and \(C\) whose center does not lie on line \(\overline{AC}\). Denote by \(P\) the intersection of the tangents to \(\omega\) at \(A\) and \(C\). Suppose that \(\omega\) meets segment \(PB\) at \(Q\)....
[ "4\\sqrt{15} - 12" ]
[ "Three distinct points \\(A, B,\\) and \\(C\\) are collinear in that order. Let \\(\\omega\\) be a circle passing through \\(A\\) and \\(C\\) whose center does not lie on line \\(\\overline{AC}\\). Denote by \\(P\\) the intersection of the tangents to \\(\\omega\\) at \\(A\\) and \\(C\\). Suppose that \\(\\omega\\)...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 4, "genselect": 5 }
9
0
0
omr-ws-1495bf3b105299a4ca3ee9e7ba693bab776f1be3dd40042eedd9202b4be1221a
Three distinct points are chosen on a regular nonagon. What is the probability that the triangle formed by these vertices is scalene?
[ "\\(\\frac{4}{7}\\)" ]
[ "Three distinct points are chosen on a regular nonagon. What is the probability that the triangle formed by these vertices is scalene?" ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-e639bcde9562c9112d09b3b4467ee1f4afb7988419a665e46e1368a289a689ac
Three distinct points are chosen uniformly at random from the vertices of a regular $2018$-gon. What is the probability that the triangle formed by these points is a right triangle?
[ "\\(\\frac{3}{2017}\\)" ]
[ "Three distinct points are chosen uniformly at random from the vertices of a regular $2018$-gon. What is the probability that the triangle formed by these points is a right triangle?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 29 }
45
0
0
omr-ws-2278ba6e5a2197451c9b22d74191ada65f1655cb4b222deccc2baacd857dcac5
Three distinct points are independently randomly selected on a circle. Find the probability that the triangle with these three points as vertices is an obtuse triangle.
[ "\\( \\frac{3}{4} \\)" ]
[ "Three distinct points are independently randomly selected on a circle. Find the probability that the triangle with these three points as vertices is an obtuse triangle." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 13 }
29
0
0
omr-ws-81c34bc0fd2c84c8bc967dbe302a956076f09b1cdde726adc04baf2e01f9ac51
Three distinct points are randomly chosen from the vertices of a regular polygon with nine sides. What is the probability that these points are the vertices of a scalene triangle?
[ "\\dfrac{9}{14}" ]
[ "Three distinct points are randomly chosen from the vertices of a regular polygon with nine sides. What is the probability that these points are the vertices of a scalene triangle?" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-9159488b0474526a4bbc599cc1ea732fd98720ad4737914d4663a416aac722d8
Three distinct points are randomly selected on the perimeter of a regular pentagon. A point is then randomly chosen inside the pentagon. What is the probability that the point chosen inside the pentagon lies within the triangle formed by connecting the three selected points on the perimeter?
[ "\\dfrac{5 + \\sqrt{5}}{20}" ]
[ "Three distinct points are randomly selected on the perimeter of a regular pentagon. A point is then randomly chosen inside the pentagon. What is the probability that the point chosen inside the pentagon lies within the triangle formed by connecting the three selected points on the perimeter?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 2, "genselect": 6 }
8
0
0
omr-ws-edf0219554b7c18d329949b25e2f90457378c1ffbc4a4b2f5f477f9da6fd5fda
Three distinct points are randomly selected on the perimeter of a regular pentagon. A point is then randomly chosen inside the pentagon. What is the probability that this point lies inside the triangle formed by connecting the three perimeter points?
[ "\\dfrac{1}{4}" ]
[ "Three distinct points are randomly selected on the perimeter of a regular pentagon. A point is then randomly chosen inside the pentagon. What is the probability that this point lies inside the triangle formed by connecting the three perimeter points?" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 5, "genselect": 2 }
7
0
0
omr-ws-c49d1ce9cbbf045241cc9e310666af5e4ea5f7f2b5e0936f69cf303f4c8c21bb
Three distinct positive integers are such that the sum of any two is exactly divisible by the third. The largest of these integers is 36. What are the two smaller integers?
[ "12 and 24" ]
[ "Three distinct positive integers are such that the sum of any two is exactly divisible by the third. The largest of these integers is 36. What are the two smaller integers?" ]
[ "aops_c4_high_school_math", "c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 1, "tir": 29 }
30
0
0
omr-ws-9df0b7a394fa3996b21150249a69dc2ac0bb3caf2dc58d80a657c12475b73a45
Three distinct positive integers are written on the blackboard. When three real numbers \(a\), \(b\), and \(c\) are written on the blackboard, consider the process of simultaneously changing the three numbers to \(\frac{b + c}{2}\), \(\frac{c + a}{2}\), and \(\frac{a + b}{2}\). When this process is repeated 2021 times,...
[ "\\(3 \\cdot 2^{2021} + 3\\)" ]
[ "Three distinct positive integers are written on the blackboard. When three real numbers \\(a\\), \\(b\\), and \\(c\\) are written on the blackboard, consider the process of simultaneously changing the three numbers to \\(\\frac{b + c}{2}\\), \\(\\frac{c + a}{2}\\), and \\(\\frac{a + b}{2}\\). When this process is ...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 20, "tir": 2 }
22
0
0
omr-ws-307d933299f2c6eaffc62c69bdb4f497c0c3802b838d248e1a2d2bb8208261f1
Three distinct positive numbers \( x, y, z \) are chosen so that the equality \( x^2yz + xy^2z^2 - 4xyz + x + yz = 0 \) holds. How many of these numbers are greater than 1?
[ "1" ]
[ "Three distinct positive numbers \\( x, y, z \\) are chosen so that the equality \\( x^2yz + xy^2z^2 - 4xyz + x + yz = 0 \\) holds. How many of these numbers are greater than 1?" ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-959e4858e242e389601b59e1071807e6b74998957f0af0a58924f2d6c39c5b6a
Three distinct positive real numbers \( A \), \( B \), and \( C \) are chosen at random with \( C > B > A \). What is the expected value of \( \frac{A+B}{C} \)?
[ "1" ]
[ "Three distinct positive real numbers \\( A \\), \\( B \\), and \\( C \\) are chosen at random with \\( C > B > A \\). What is the expected value of \\( \\frac{A+B}{C} \\)?" ]
[ "aops_c4_high_school_math", "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 31 }
31
0
0
omr-ws-1106a861c1a299b63e57f94b7dae09b3d0dfa10153a138a40fe792d5ab47d594
Three distinct real numbers $\alpha, \beta, \gamma$ satisfy the following equations: \[ \begin{cases} \alpha + \beta + \gamma = 12 \\ \alpha^2 + \beta^2 + \gamma^2 = 12(10 - k) \\ \alpha^3 + \beta^3 + \gamma^3 = -6(k^2 + 40k - 212) \end{cases} \] Find the range of $k$.
[ "\\( k \\in (-18-12\\sqrt{3}, -18+12\\sqrt{3}) \\setminus \\{-2\\} \\)" ]
[ "Three distinct real numbers $\\alpha, \\beta, \\gamma$ satisfy the following equations:\n\\[\n\\begin{cases}\n\\alpha + \\beta + \\gamma = 12 \\\\\n\\alpha^2 + \\beta^2 + \\gamma^2 = 12(10 - k) \\\\\n\\alpha^3 + \\beta^3 + \\gamma^3 = -6(k^2 + 40k - 212)\n\\end{cases}\n\\]\nFind the range of $k$." ]
[ "aops_c7_college_math", "c7_college_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 7, "genselect": 8, "tir": 15 }
30
0
0
omr-ws-aebc2ae1633eb79b93273d8d204cc4a929ea1818107e295e948cc3c1830a9c41
Three distinct real numbers \(a, x, y\) satisfy the equation \(\sqrt{a(x-a)} + \sqrt{a(y-a)} = \sqrt{x-a} - \sqrt{a-y}\). Find the value of \(\frac{3x^2 + xy - y^2}{x^2 - xy + y^2}\).
[ "\\(\\frac{1}{3}\\)" ]
[ "Three distinct real numbers \\(a, x, y\\) satisfy the equation \\(\\sqrt{a(x-a)} + \\sqrt{a(y-a)} = \\sqrt{x-a} - \\sqrt{a-y}\\). Find the value of \\(\\frac{3x^2 + xy - y^2}{x^2 - xy + y^2}\\)." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 20 }
36
0
0
omr-ws-58ee432d24aacc981f84de0d08254cfbfd78b03bfad496e88bfd49f1605f842a
Three distinct segments are chosen at random among the segments whose end-points are the vertices of a regular 12-gon. What is the probability that the lengths of these three segments are the three side lengths of a triangle with positive area?
[ "\\(\\frac{223}{286}\\)", "\\dfrac{223}{286}" ]
[ "Three distinct segments are chosen at random among the segments whose end-points are the vertices of a regular 12-gon. What is the probability that the lengths of these three segments are the three side lengths of a triangle with positive area?" ]
[ "aops_c5_contests_amp_programs" ]
[ "cot", "genselect", "tir" ]
{ "cot": 28, "genselect": 2, "tir": 20 }
50
0
0
omr-ws-ab10c6493f94344e913a599935d21fcfc913d85d5a175d91004de836be3d6508
Three distinct segments are chosen at random among the segments whose endpoints are the vertices of a regular 12-gon. What is the probability that the lengths of these three segments are the three side lengths of a triangle with positive area?
[ "\\dfrac{223}{286}" ]
[ "Three distinct segments are chosen at random among the segments whose endpoints are the vertices of a regular 12-gon. What is the probability that the lengths of these three segments are the three side lengths of a triangle with positive area?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 14, "genselect": 1 }
15
0
0
omr-ws-06f1e17b9cf44afb31164eebb168e76a348409ce62698330c0e31fa2051fc175
Three distinct unit squares are selected uniformly and randomly from a $4 \times 4$ grid of unit squares. If the probability that each unit square shares a side with at least one of the two other unit squares is $\frac{m}{n}$ where $m,n$ are coprime integers, find the sum of the digits of $n$.
[ "5" ]
[ "Three distinct unit squares are selected uniformly and randomly from a $4 \\times 4$ grid of unit squares. If the probability that each unit square shares a side with at least one of the two other unit squares is $\\frac{m}{n}$ where $m,n$ are coprime integers, find the sum of the digits of $n$." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 10, "tir": 2 }
12
0
0
omr-ws-38ccbcc8b081cb24794ebd7f40b67aceab212e9cc10c914175c8719d269ac78d
Three distinct vertices are chosen at random from the vertices of a given regular polygon of $(2n+1)$ sides. If all such choices are equally likely, what is the probability that the center of the given polygon lies in the interior of the triangle determined by the three chosen random points?
[ "\\frac{n+1}{4n-2}" ]
[ "Three distinct vertices are chosen at random from the vertices of a given regular polygon of $(2n+1)$ sides. If all such choices are equally likely, what is the probability that the center of the given polygon lies in the interior of the triangle determined by the three chosen random points?" ]
[ "MATH_training_set" ]
[ "genselect" ]
{ "genselect": 7 }
7
0
0
omr-ws-15d330f66db6c40419b15fd092f592be0d6c863a0017c80cf92e0556b6f13421
Three distinct vertices are chosen at random from the vertices of a given regular polygon with $(2n+1)$ sides. What is the probability that the center of the polygon lies in the interior of the triangle determined by the three chosen vertices?
[ "\\(\\frac{n+1}{2(2n-1)}\\)" ]
[ "Three distinct vertices are chosen at random from the vertices of a given regular polygon with $(2n+1)$ sides. What is the probability that the center of the polygon lies in the interior of the triangle determined by the three chosen vertices?" ]
[ "aops_c6_high_school_olympiads" ]
[ "genselect" ]
{ "genselect": 4 }
4
0
0
omr-ws-9b9059bd44800c2b16f20fcadebd887ab269c4cc2da90b4aa3957233bdb957e5
Three distinct vertices are chosen at random from the vertices of a regular polygon with \( n \) sides. What is the probability that the center of the polygon lies in the interior of the triangle determined by the three chosen vertices?
[ "\\(\\begin{cases} \\dfrac{n-4}{4(n-1)} & \\text{for } n \\text{ even}; \\\\ \\dfrac{n+1}{4(n-2)} & \\text{for } n \\text{ odd} \\end{cases}\\)" ]
[ "Three distinct vertices are chosen at random from the vertices of a regular polygon with \\( n \\) sides. What is the probability that the center of the polygon lies in the interior of the triangle determined by the three chosen vertices?" ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 3, "tir": 1 }
4
0
0
omr-ws-a55a4c0b7bbb152c5f5169520a848efacb5511e43acfa5801cda0997633c859a
Three distinct vertices are randomly selected from a regular $(2n+1)$-sided polygon. What is the probability that the triangle formed by these vertices contains the center of the polygon?
[ "$\\frac{n+1}{4n-2}$" ]
[ "Three distinct vertices are randomly selected from a regular $(2n+1)$-sided polygon. What is the probability that the triangle formed by these vertices contains the center of the polygon?" ]
[ "aops_c5_contests_amp_programs" ]
[ "genselect" ]
{ "genselect": 7 }
7
0
0
omr-ws-a491a15cbf4158ca153dfd1ebe2580be4edc89750d08744ede9fdc538a8c68c8
Three distinct vertices of a cube are chosen at random. What is the probability that the plane determined by these three vertices contains points inside the cube?
[ "\\(\\frac{4}{7}\\)" ]
[ "Three distinct vertices of a cube are chosen at random. What is the probability that the plane determined by these three vertices contains points inside the cube?" ]
[ "aops_c4_high_school_math", "aops_c5_contests_amp_programs", "c5_contests_amp_programs" ]
[ "cot", "tir" ]
{ "cot": 30, "tir": 58 }
88
0
0
omr-ws-cf19852617c95ab69cdd98a958220256bdc4c2e4e7b35c4a9a7d1e3b24e1c1fa
Three doctors, four nurses, and three patients stand in a line in random order. The probability that there is at least one doctor and at least one nurse between each pair of patients is \(\frac{m}{n}\), where \(m\) and \(n\) are relatively prime positive integers. Find \(m + n\).
[ "153" ]
[ "Three doctors, four nurses, and three patients stand in a line in random order. The probability that there is at least one doctor and at least one nurse between each pair of patients is \\(\\frac{m}{n}\\), where \\(m\\) and \\(n\\) are relatively prime positive integers. Find \\(m + n\\)." ]
[ "aops_c4_high_school_math" ]
[ "tir" ]
{ "tir": 5 }
5
0
0
omr-ws-ff88eb1e91b1fe760d7333e2045851f56ae4523e0add7ca0bc0cf74c9ac9a445
Three dogs stand at the vertices of an equilateral triangle with side length 1. Dog at vertex 1 runs towards dog at vertex 2, dog at vertex 2 runs towards dog at vertex 3, and dog at vertex 3 runs towards dog at vertex 1. They all run with the same speed. Find the distance each dog travels before they meet.
[ "\\(\\frac{2}{3}\\)" ]
[ "Three dogs stand at the vertices of an equilateral triangle with side length 1. Dog at vertex 1 runs towards dog at vertex 2, dog at vertex 2 runs towards dog at vertex 3, and dog at vertex 3 runs towards dog at vertex 1. They all run with the same speed. Find the distance each dog travels before they meet." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 48, "tir": 20 }
68
0
0
omr-ws-3b046a1bb243aa0e80bcf6c8a9067c3ddd32e817cd239797f97daed3339ddc86
Three ducks, Huey, Dewey, and Louie, each waddle along different straight lines in the plane at their own constant speeds. Suppose at three distinct times, they are collinear. If the positions of Huey, Dewey, and Louie at these times are represented by the coordinates $(1, 2)$, $(3, 4)$, and $(5, 6)$ respectively, and ...
[ "27" ]
[ "Three ducks, Huey, Dewey, and Louie, each waddle along different straight lines in the plane at their own constant speeds. Suppose at three distinct times, they are collinear. If the positions of Huey, Dewey, and Louie at these times are represented by the coordinates $(1, 2)$, $(3, 4)$, and $(5, 6)$ respectively,...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 4, "genselect": 3 }
7
0
0
omr-ws-8c56992a07110a377036589aa8c38b970cced4f6a17158146c33ec874ed1e982
Three edges of a parallelepiped lie on three intersecting diagonals of the lateral faces of a triangular prism. Find the ratio of the volumes of the parallelepiped and the prism.
[ "\\dfrac{1}{3}" ]
[ "Three edges of a parallelepiped lie on three intersecting diagonals of the lateral faces of a triangular prism. Find the ratio of the volumes of the parallelepiped and the prism." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 7, "genselect": 1 }
8
0
0
omr-ws-6fbc5888c790761ec93b87c442225a4fe3cd7a3c54ad8c17b0d9b2dbb0d7abf8
Three ellipses are pairwise tangent with semimajor axis $4$ and semiminor axis $3$. If the area of the triangle formed by their centers can be written as $a\sqrt{b}$, where $a$ and $b$ are integers and $b$ is square-free, find $a + b$.
[ "15" ]
[ "Three ellipses are pairwise tangent with semimajor axis $4$ and semiminor axis $3$. If the area of the triangle formed by their centers can be written as $a\\sqrt{b}$, where $a$ and $b$ are integers and $b$ is square-free, find $a + b$." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 1 }
17
0
0
omr-ws-0aaba6309e39bd764d6d4d8df3d630c92c8e6b94f37eedff0256879784eada76
Three ellipses that are translated images of each other and mutually tangent are defined as shown, centered at points \(A, B, C\). If \(AB = 8\) and \(BC = 18\), find the area inside triangle \(ABC\) but outside any of the three ellipses.
[ "\\(\\frac{8\\sqrt{693} - 4\\sqrt{231}\\pi}{3}\\)" ]
[ "Three ellipses that are translated images of each other and mutually tangent are defined as shown, centered at points \\(A, B, C\\). If \\(AB = 8\\) and \\(BC = 18\\), find the area inside triangle \\(ABC\\) but outside any of the three ellipses." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 2, "genselect": 3, "tir": 1 }
6
0
0
omr-ws-b414afaaf2f8ce63da7e791c46ebd23f1db2b4a241e9fbe90f6b2786fddd07ef
Three empty jugs are on a table. Winnie the Pooh, Rabbit, and Piglet take turns placing walnuts in the jugs. Winnie the Pooh can place walnuts in the first or second jug, Rabbit in the second or third jug, and Piglet in the first or third jug. The player whose move results in exactly 1999 walnuts in total loses the gam...
[ "1999" ]
[ "Three empty jugs are on a table. Winnie the Pooh, Rabbit, and Piglet take turns placing walnuts in the jugs. Winnie the Pooh can place walnuts in the first or second jug, Rabbit in the second or third jug, and Piglet in the first or third jug. The player whose move results in exactly 1999 walnuts in total loses th...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 6, "genselect": 8 }
14
0
0
omr-ws-a2aea58b57a0576eaf845e222047e7599e69484eccd946f72cae19f4953a56dd
Three equal circles \( k_1, k_2, k_3 \) intersect non-tangentially at a point \( P \). Let \( A \) and \( B \) be the centers of circles \( k_1 \) and \( k_2 \), respectively. Let \( D \) and \( C \) be the intersections of \( k_3 \) with \( k_1 \) and \( k_2 \), respectively, which are different from \( P \). If the r...
[ "\\sqrt{3}" ]
[ "Three equal circles \\( k_1, k_2, k_3 \\) intersect non-tangentially at a point \\( P \\). Let \\( A \\) and \\( B \\) be the centers of circles \\( k_1 \\) and \\( k_2 \\), respectively. Let \\( D \\) and \\( C \\) be the intersections of \\( k_3 \\) with \\( k_1 \\) and \\( k_2 \\), respectively, which are diffe...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 6 }
6
0
0
omr-ws-232468ee82f5f054214e2da8f2e7ab0139bb6bf5f8f81768356f41c77912cfdf
Three equal circles are arranged so that each is tangential to the others. They are enclosed in a regular hexagon so that the hexagon is tangential to the circles. Find the radius \( r \) of the circles in terms of the side-length \( x \) of the hexagon.
[ "\\( \\frac{\\sqrt{3} \\, x}{4} \\)" ]
[ "Three equal circles are arranged so that each is tangential to the others. They are enclosed in a regular hexagon so that the hexagon is tangential to the circles. Find the radius \\( r \\) of the circles in terms of the side-length \\( x \\) of the hexagon." ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 6, "genselect": 1, "tir": 1 }
8
0
0
omr-ws-1c32d4fce6c483e80920dd8313c49c51fdbfb07ffd0e6ea4064c3f35bbd6a27d
Three equal circles are externally tangent to a circle of radius $r$ and pairwise tangent to one another. Find the areas of the three curvilinear triangles formed by these circles.
[ "S=\\left[12+7\\sqrt{3}-\\left(\\frac{23}{6}+2\\sqrt{3}\\right)\\pi\\right]r^2" ]
[ "Three equal circles are externally tangent to a circle of radius $r$ and pairwise tangent to one another. Find the areas of the three curvilinear triangles formed by these circles." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-d211953070e58a5be3d68c3315fcbc39b0b9603574ea87d0b60dcf9639ae98cc
Three equal circles are tangent to each other and a circle $\omega$ is tangent to all three of them. From a point $P$ on $\omega$, tangent segments $PA$, $PB$, and $PC$ are drawn to the other three circles. If the lengths of $PA$ and $PB$ are $7$ and $11$ respectively, find the length of $PC$.
[ "18" ]
[ "Three equal circles are tangent to each other and a circle $\\omega$ is tangent to all three of them. From a point $P$ on $\\omega$, tangent segments $PA$, $PB$, and $PC$ are drawn to the other three circles. If the lengths of $PA$ and $PB$ are $7$ and $11$ respectively, find the length of $PC$." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 4, "genselect": 1 }
5
0
0
omr-ws-36bfd6651da65f9a672feb02e6d9d7d99b4d09b477bbee87b6531b3b140d33b3
Three equal circles have a common point $M$ and intersect in pairs at points $A, B, C$. If the radius of each circle is $r$, find the area of triangle $ABC$ in terms of $r$.
[ "\\dfrac{3\\sqrt{3}}{4} r^2" ]
[ "Three equal circles have a common point $M$ and intersect in pairs at points $A, B, C$. If the radius of each circle is $r$, find the area of triangle $ABC$ in terms of $r$." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-d4f709d26d7b97742bb9d61b6eac6a5ba25587852be6efb618817f611f579702
Three equal circles have a common point H and intersect each other pairwise at points A, B, and C. If the radius of each circle is 5 units, find the area of the circumcircle of triangle ABC.
[ "25\\pi" ]
[ "Three equal circles have a common point H and intersect each other pairwise at points A, B, and C. If the radius of each circle is 5 units, find the area of the circumcircle of triangle ABC." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-3881964777e966d6de2a5b53c8e450af76ba73b6379df6108459a65afd4a5bb5
Three equal circles of radius \( r \) are arranged such that each circle touches the other two. A smaller circle is inscribed in the gap formed between these three circles. Find the radius of the smaller circle.
[ "\\(\\frac{(2\\sqrt{3}-3)r}{3}\\)" ]
[ "Three equal circles of radius \\( r \\) are arranged such that each circle touches the other two. A smaller circle is inscribed in the gap formed between these three circles. Find the radius of the smaller circle." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 25 }
41
0
0
omr-ws-9963005e83536db86e60df4a4cb8c1772fc51c5f461b9703c9ee51a56378b2b2
Three equal circles of radius \( r \) each pass through the centers of the other two. What is the area of the region common to all three circles?
[ "\\( r^2 \\left( \\frac{\\pi - \\sqrt{3}}{2} \\right) \\)" ]
[ "Three equal circles of radius \\( r \\) each pass through the centers of the other two. What is the area of the region common to all three circles?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 15, "tir": 15 }
30
0
0
omr-ws-c2fc4ade58052a2ad96741a8185ed06fc7372032340c4b990da565105ba205f7
Three equal circles pass through a given point \(H\) and meet one another two by two at points \(A, B, C\). If the radius of each circle is \(r\) and the distance from \(H\) to each of the points \(A, B,\) and \(C\) is \(d\), find the value of \(\frac{d}{r}\).
[ "1" ]
[ "Three equal circles pass through a given point \\(H\\) and meet one another two by two at points \\(A, B, C\\). If the radius of each circle is \\(r\\) and the distance from \\(H\\) to each of the points \\(A, B,\\) and \\(C\\) is \\(d\\), find the value of \\(\\frac{d}{r}\\)." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-ba742cb55b3c1fcf35c375155ca85e372f386229e598d517586141e85d227324
Three equal circles tangent to one another are inscribed in a regular triangle, whose side is equal to $a$. Each of them is in contact with two sides of the given triangle. Determine the radii of the circles.
[ "$r=\\frac{a}{2\\left(\\sqrt 3+1\\right)}=\\frac{a\\left(\\sqrt 3-1\\right)}{4}$" ]
[ "Three equal circles tangent to one another are inscribed in a regular triangle, whose side is equal to $a$. Each of them is in contact with two sides of the given triangle. Determine the radii of the circles." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-299ded79e2c4515a052f02b296b9c1c4e591eaaa1ca25dbabde01c910226de1f
Three equal circles with a common point \( H \) intersect each other pairwise at points \( A \), \( B \), and \( C \). If the radius of each of the three given circles is \( r \), find the radius of the circumcircle of triangle \( ABC \) in terms of \( r \).
[ "r" ]
[ "Three equal circles with a common point \\( H \\) intersect each other pairwise at points \\( A \\), \\( B \\), and \\( C \\). If the radius of each of the three given circles is \\( r \\), find the radius of the circumcircle of triangle \\( ABC \\) in terms of \\( r \\)." ]
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 7 }
7
0
0
omr-ws-46f41df84fbd7d0afc56cd02c63e3c9cd6ced4a6427ad4d79fdef3f21c465060
Three equal circles with radius \((2+\sqrt{2})3\sqrt{3}\) touch each other. Find the radius of another circle that touches all three of these circles.
[ "\\(6\\sqrt{3} + 3\\sqrt{6} + 6 + 3\\sqrt{2}\\)" ]
[ "Three equal circles with radius \\((2+\\sqrt{2})3\\sqrt{3}\\) touch each other. Find the radius of another circle that touches all three of these circles." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 1, "tir": 2 }
3
0
0
omr-ws-3e205e948ee47b7786f822e7c709c984d413eafed6ee5c969316a828e5364b2e
Three equal pairwise tangent spheres of radius $R$ lie on a plane. A fourth sphere is tangent to the plane and to each given sphere. Find the radius of the fourth sphere.
[ "\\(\\frac{R}{3}\\)" ]
[ "Three equal pairwise tangent spheres of radius $R$ lie on a plane. A fourth sphere is tangent to the plane and to each given sphere. Find the radius of the fourth sphere." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-be11f39bcce39bcece2c334ab070bf94c1bc454ef7790d086c719fc29652a2ee
Three equal right circular cones with angle $\alpha $ $(\alpha \le 2\pi /3)$ in the axial section have a common vertex and are externally tangent to one another along the generatrices $l_1$, $l_2$, $l_3$. Find the angle between $l_1$ and $l_2$.
[ "$2\\arcsin [1/2\\tan(\\alpha /2)]$" ]
[ "Three equal right circular cones with angle $\\alpha $ $(\\alpha \\le 2\\pi /3)$ in the axial section have a common vertex and are externally tangent to one another along the generatrices $l_1$, $l_2$, $l_3$. Find the angle between $l_1$ and $l_2$." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-2f28206e7f384b4df82e9e514913847a95f5e1388cd6430b09337324a2df7b98
Three equal spheres of radius $R$ tangent to one another lie on a plane $P$. A right circular cone with its base in $P$ is externally tangent to the spheres. Find the radius of the base of the cone if its altitude is equal to $qR$.
[ "r = \\frac{2\\sqrt{3}(q-1) - \\sqrt{9q^2 - 18q + 12}}{3(q-2)}R\n\nFor the specific case when \\( q = 2 \\):\nr = \\frac{\\sqrt{3}}{6}R\n\nSo, the final answer is:\n\\[\nr = \\begin{cases} \n\\frac{\\sqrt{3}}{6}R & \\text{if } q = 2, \\\\\n\\frac{2\\sqrt{3}(q-1) - \\sqrt{9q^2 - 18q + 12}}{3(q-2)}R & \\text{if } q \...
[ "Three equal spheres of radius $R$ tangent to one another lie on a plane $P$. A right circular cone with its base in $P$ is externally tangent to the spheres. Find the radius of the base of the cone if its altitude is equal to $qR$." ]
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-049205af0be71e643a93cc5c756245917da8681d4d7331d4c7112a911a142c44
Three equally skilled players are participating in a 3-game tournament. If all 3 games have no winner, additional games are played until one player wins. The prize money is $20. Calculate the expected value of the prize money for one player.
[ "\\(\\frac{20}{3}\\)" ]
[ "Three equally skilled players are participating in a 3-game tournament. If all 3 games have no winner, additional games are played until one player wins. The prize money is $20. Calculate the expected value of the prize money for one player." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 20 }
36
0
0
omr-ws-f5b64009d8123a96e9876215509aaa0a215bf2e05d2a6e3f1d299cc425092f74
Three equally spaced parallel lines intersect a circle, creating three chords of lengths $38, 38,$ and $34$. What is the distance between two adjacent parallel lines?
[ "6" ]
[ "Three equally spaced parallel lines intersect a circle, creating three chords of lengths $38, 38,$ and $34$. What is the distance between two adjacent parallel lines?" ]
[ "aops_c5_contests_amp_programs" ]
[ "cot", "genselect", "tir" ]
{ "cot": 74, "genselect": 8, "tir": 1 }
83
0
0
omr-ws-e2865cf741aeda7bdd952686f5c5a6de6a008a318e071b51c2a0420b59fa9406
Three equally spaced parallel lines intersect a circle, creating three chords of lengths $38, 38,$ and $34.$ What is the distance between two adjacent parallel lines?
[ "6" ]
[ "Three equally spaced parallel lines intersect a circle, creating three chords of lengths $38, 38,$ and $34.$ What is the distance between two adjacent parallel lines?" ]
[ "aops_c5_contests_amp_programs" ]
[ "cot", "genselect" ]
{ "cot": 14, "genselect": 7 }
21
0
0
omr-ws-6fdbb99b3fc7a4986b8258b714101ea2ee5cb5563b010b5fa003b7016dbc501f
Three equally spaced parallel lines intersect a circle, creating three chords of lengths $38,$ $38,$ and $34.$ What is the distance between two adjacent parallel lines?
[ "6" ]
[ "Three equally spaced parallel lines intersect a circle, creating three chords of lengths $38,$ $38,$ and $34.$ What is the distance between two adjacent parallel lines?" ]
[ "aops_c5_contests_amp_programs" ]
[ "cot", "genselect" ]
{ "cot": 12, "genselect": 6 }
18
0
0
omr-ws-4c1381db3184ad64fb075c31805356b65b724d59dd49085b7175cf36acfdf0c5
Three equally spaced parallel lines intersect a circle, creating three chords of lengths 38, 38, and 34. What is the distance between two adjacent parallel lines?
[ "6" ]
[ "Three equally spaced parallel lines intersect a circle, creating three chords of lengths 38, 38, and 34. What is the distance between two adjacent parallel lines?" ]
[ "aops_c5_contests_amp_programs" ]
[ "cot", "genselect" ]
{ "cot": 29, "genselect": 8 }
37
0
0
omr-ws-5055e15a9820767137eec0775cd64ff8bb1c8f6313913e462595d5b48270b313
Three equilateral triangles $ABC_1, BCA_1,$ and $CAB_1$ are constructed externally on the sides of an arbitrary triangle $ABC$. The midpoints of the segments $A_1B_1, B_1C_1,$ and $C_1A_1$ are labeled $C_2, A_2,$ and $B_2$, respectively. Let $P$ be the point of intersection of the lines $AA_2$ and $BB_2$. Calculate the...
[ "2" ]
[ "Three equilateral triangles $ABC_1, BCA_1,$ and $CAB_1$ are constructed externally on the sides of an arbitrary triangle $ABC$. The midpoints of the segments $A_1B_1, B_1C_1,$ and $C_1A_1$ are labeled $C_2, A_2,$ and $B_2$, respectively. Let $P$ be the point of intersection of the lines $AA_2$ and $BB_2$. Calculat...
[ "aops_c6_high_school_olympiads" ]
[ "cot" ]
{ "cot": 6 }
6
0
0
omr-ws-15738ced0bec02a16ce7a51d287dfc172875e5bd76ef11d1f01dbe655f7db13c
Three equilateral triangles of equal size fit inside a unit square without overlapping. What is the greatest possible area of one of these triangles?
[ "2\\sqrt{3} - 3" ]
[ "Three equilateral triangles of equal size fit inside a unit square without overlapping. What is the greatest possible area of one of these triangles?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 8, "genselect": 2 }
10
0
0
omr-ws-c2b8c09e77301ecdcb38b0b61bf985128392739b69abc5bb10d3f02bfd3cac18
Three equilateral triangles of paper whose sides measure 13 cm were placed as shown in the figure in such a way that they form an equilateral triangle whose sides measure 24 cm. In the part a white equilateral triangle is formed in the center. What is the perimeter of that white triangle in cm?
[ "99" ]
[ "Three equilateral triangles of paper whose sides measure 13 cm were placed as shown in the figure in such a way that they form an equilateral triangle whose sides measure 24 cm. In the part a white equilateral triangle is formed in the center. What is the perimeter of that white triangle in cm?" ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-d2a15a04d9a02089e8222a70d69c937a3679b7c856b38d23803005a2b3cb56ec
Three equilateral triangles with side length $c$ can completely cover an equilateral triangle with side length $1$. The triangles may overlap with each other. Find the minimum possible value of $c$.
[ "\\dfrac{2}{3}", "\\dfrac{2}{\\sqrt{3}}" ]
[ "Three equilateral triangles with side length $c$ can completely cover an equilateral triangle with side length $1$. The triangles may overlap with each other. Find the minimum possible value of $c$." ]
[ "aops_c4_high_school_math", "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 23, "genselect": 5 }
28
0
0
omr-ws-838182df17772053736dab16162560982399680fe0128c99ce81145a8729e72b
Three events E1, E2, E3 must occur such that only one can happen. The odds are 7 to 4 against E1 and 5 to 3 against E2. Find the odds against E3.
[ "65 to 23" ]
[ "Three events E1, E2, E3 must occur such that only one can happen. The odds are 7 to 4 against E1 and 5 to 3 against E2. Find the odds against E3." ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 28 }
44
0
0
omr-ws-e173fc32cc93b85484fe2f6908a0bed937e3937c4e867e01a413f14ba3680556
Three excavators are busy digging a pit. The difference between the outputs of the first and third excavators is three times the difference between that of the third and second excavators. The first excavator does $\frac{4}{5}$ of the whole job within a period of time that would be needed for the second excavator alone...
[ "Three-fold" ]
[ "Three excavators are busy digging a pit. The difference between the outputs of the first and third excavators is three times the difference between that of the third and second excavators. The first excavator does $\\frac{4}{5}$ of the whole job within a period of time that would be needed for the second excavator...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-e19568b057796730967c97da4618a70c406d686d5b9c2776a47ee18c7a7b479e
Three excavators had to dig a pit each: the first and the second excavator a pit of 800 m$^3$ and the third one, a pit of 400 m$^3$. The first and the second excavator, working together, removed three times as much earth per hour as the third one; the first and the third excavator began working simultaneously and the s...
[ "600 m$^3$" ]
[ "Three excavators had to dig a pit each: the first and the second excavator a pit of 800 m$^3$ and the third one, a pit of 400 m$^3$. The first and the second excavator, working together, removed three times as much earth per hour as the third one; the first and the third excavator began working simultaneously and ...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-6d467cc7bc574aa3536c45d063cf03406bc9cf97387189c82c1e02df538f0904
Three excavators participated in digging a pit with the volume of 340 m$^3$. The first excavator removes 40 m$^3$ of earth per hour, the second excavator takes out $c$ m$^3$ less than the first, and the third one removes $2c$ m$^3$ more than the first. First the first and the second excavators worked simultaneously and...
[ "$c=9\\frac{11}{16}$" ]
[ "Three excavators participated in digging a pit with the volume of 340 m$^3$. The first excavator removes 40 m$^3$ of earth per hour, the second excavator takes out $c$ m$^3$ less than the first, and the third one removes $2c$ m$^3$ more than the first. First the first and the second excavators worked simultaneousl...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-256f314a195793b2a96c21e4b6ce1fd1376679d20818f37e705b9951052fd329
Three experts each have a 60% accuracy rate in predicting the winner of a game. What is the probability that they are correct if all three experts concur in their prediction?
[ "\\(\\frac{27}{35}\\)" ]
[ "Three experts each have a 60% accuracy rate in predicting the winner of a game. What is the probability that they are correct if all three experts concur in their prediction?" ]
[ "aops_c7_college_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 21 }
37
0
0
omr-ws-ed18f1a279ce4912227c1caeda9884b3b024a7c4f1565eef3b9dc560530a1fbd
Three faces of a rectangular prism meet at a vertex. The centers of these faces form a triangle with side lengths 4, 5, and 6. What is the square of the volume of the prism?
[ "48600" ]
[ "Three faces of a rectangular prism meet at a vertex. The centers of these faces form a triangle with side lengths 4, 5, and 6. What is the square of the volume of the prism?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 13 }
29
0
0
omr-ws-2488c453719a289376b0899207b7fd5d761763a3746a126828cff70506bcccb2
Three faces of a right rectangular prism have areas of 48, 49 and 50 square units. What is the volume of the prism, in cubic units? Express your answer to the nearest whole number.
[ "343" ]
[ "Three faces of a right rectangular prism have areas of 48, 49 and 50 square units. What is the volume of the prism, in cubic units? Express your answer to the nearest whole number." ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-2e1a6f35fbca989118f46dc07c243495dbadf9acf7b68559db953ab09a686903
Three fair 6-sided dice are tossed. What is the probability that the sum of the numbers on two of the dice equals the number on the third die?
[ "\\dfrac{5}{24}" ]
[ "Three fair 6-sided dice are tossed. What is the probability that the sum of the numbers on two of the dice equals the number on the third die?" ]
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-0f344b5236b5a5e69896e9b9019a98d3a752df3f955a6f7ed8a6fb95cfa09189
Three fair 6-sided dice are tossed. What is the probability that the sum of the numbers on two of the dice equals the third?
[ "\\(\\frac{5}{24}\\)" ]
[ "Three fair 6-sided dice are tossed. What is the probability that the sum of the numbers on two of the dice equals the third?" ]
[ "aops_c4_high_school_math", "c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 16, "tir": 32 }
48
0
0
omr-ws-37179c7b4c2d6db8895104c05b5668ef3a234af2e44614b336d0666144671239
Three fair six-sided dice are rolled. The probability that there is exactly 1 one, at least 2 twos, or exactly 3 threes can be expressed as $\frac{m}{n}$. Find the value of $m+n$.
[ "77" ]
[ "Three fair six-sided dice are rolled. The probability that there is exactly 1 one, at least 2 twos, or exactly 3 threes can be expressed as $\\frac{m}{n}$. Find the value of $m+n$." ]
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-78b53c7636cc09fa52fb0b4739ca178e8a0eb2931f08f48852949195c88a5863
Three fair six-sided dice are rolled. What is the probability that the values shown on two of the dice sum to the value shown on the remaining die?
[ "\\(\\frac{5}{24}\\)", "\\dfrac{5}{24}" ]
[ "Three fair six-sided dice are rolled. What is the probability that the values shown on two of the dice sum to the value shown on the remaining die?" ]
[ "aops_c4_high_school_math", "aops_c5_contests_amp_programs", "c5_contests_amp_programs" ]
[ "cot", "tir" ]
{ "cot": 32, "tir": 32 }
64
0
0
omr-ws-0c499f6069b0b198cb4ae0ce3016f3f50b96d1f80f18dded4cd08e37a42eaf0a
Three fair six-sided dice, each numbered 1 through 6, are rolled. The probability that the three numbers that come up can be expressed as \( \frac{m}{n} \). Compute \( m+n \).
[ "109" ]
[ "Three fair six-sided dice, each numbered 1 through 6, are rolled. The probability that the three numbers that come up can be expressed as \\( \\frac{m}{n} \\). Compute \\( m+n \\)." ]
[ "aops_c4_high_school_math", "c4_high_school_math" ]
[ "cot", "genselect", "tir" ]
{ "cot": 8, "genselect": 7, "tir": 25 }
40
0
0
omr-ws-819b288888665f3b9bf07220a66934234bd5f06d861465d63c746b4c227c1798
Three fair, standard six-sided dice are rolled. What is the probability that the sum of the numbers on the top faces is 18? Express your answer as a common fraction.
[ "\\frac{1}{216}" ]
[ "Three fair, standard six-sided dice are rolled. What is the probability that the sum of the numbers on the top faces is 18? Express your answer as a common fraction." ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-a3b6213e3a3351f4469032cd13efae8517e235a4ca1cecf66ac8b4935fbee614
Three families sit down around a circular table, each person choosing their seat at random. One family has two members, while the other two families have three members. What is the probability that every person sits next to at least one person from a different family?
[ "\\dfrac{53}{70}" ]
[ "Three families sit down around a circular table, each person choosing their seat at random. One family has two members, while the other two families have three members. What is the probability that every person sits next to at least one person from a different family?" ]
[ "aops_c4_high_school_math" ]
[ "cot", "genselect" ]
{ "cot": 13, "genselect": 8 }
21
0
0
omr-ws-469e3042a96999fb987a4ff887c77cb82f4865d80d949534aa2be3cf3daf7eb5
Three farmers (Bob, Dick, and Tom) rented a pasture and a large horse barn for a fixed amount per month. They agreed to pay in proportion to the number of horses each held. For the first month, Bob had 18 horses while Dick and Tom had some. Dick paid $480 of rent that month. For the second month, each put in 2 more hor...
[ "1193.10" ]
[ "Three farmers (Bob, Dick, and Tom) rented a pasture and a large horse barn for a fixed amount per month. They agreed to pay in proportion to the number of horses each held. For the first month, Bob had 18 horses while Dick and Tom had some. Dick paid $480 of rent that month. For the second month, each put in 2 mor...
[ "aops_c4_high_school_math" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-c199d62f568605252234db2367f17a02d1cb115ec436a5d9a936fdfbc1bc641e
Three farmers sell chickens at a market. One has 10 chickens, another has 16, and the third has 26. Each farmer sells at least one, but not all, of his chickens before noon, all farmers selling at the same price per chicken. Later in the day, each sells his remaining chickens at a reduced price. If each farmer received...
[ "\\( a = \\frac{15}{4}, b = \\frac{5}{4} \\)" ]
[ "Three farmers sell chickens at a market. One has 10 chickens, another has 16, and the third has 26. Each farmer sells at least one, but not all, of his chickens before noon, all farmers selling at the same price per chicken. Later in the day, each sells his remaining chickens at a reduced price. If each farmer rec...
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 1, "tir": 18 }
19
0
0
omr-ws-4737871cf8b2e0bb044e2d7f89f5e99ba01f73061f3e1df0f5775676d26dd1a9
Three farmers sell chickens at a market. One has 10 chickens, another has 16, and the third has 26. Each farmer sells at least one, but not all, of his chickens before noon, all farmers selling at the same price per chicken. Later in the day, each sells his remaining chickens, all again selling at the same reduced pric...
[ "1.25" ]
[ "Three farmers sell chickens at a market. One has 10 chickens, another has 16, and the third has 26. Each farmer sells at least one, but not all, of his chickens before noon, all farmers selling at the same price per chicken. Later in the day, each sells his remaining chickens, all again selling at the same reduced...
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 13 }
13
0
0
omr-ws-62abe8a913a6cc737b4c46d59a455f49fe7c1608e012185208c4e3d44db62890
Three farmers sold chickens at the local market. One farmer had 10 chickens, another had 16 chickens, and the last had 26 chickens. They agreed to sell all chickens at the same price initially and then lowered the price to the same lower price point by lunchtime. By the end of the day, each farmer collected $35 from th...
[ "\\( p = \\frac{15}{4}, q = \\frac{5}{4} \\)" ]
[ "Three farmers sold chickens at the local market. One farmer had 10 chickens, another had 16 chickens, and the last had 26 chickens. They agreed to sell all chickens at the same price initially and then lowered the price to the same lower price point by lunchtime. By the end of the day, each farmer collected $35 fr...
[ "aops_c4_high_school_math" ]
[ "cot", "tir" ]
{ "cot": 1, "tir": 14 }
15
0
0
omr-ws-f142aa48f95e34fc2a2413a3721a24ec2f3d0b48b5336c0da1954c7d6fdb8056
Three farmers sold chickens at the local market. The first farmer had 10 chickens, the second had 16 chickens, and the third had 26 chickens. They agreed to sell all their chickens at the same price initially and then lowered their prices to the same new price by lunchtime. By the end of the day, each farmer collected ...
[ "1.25" ]
[ "Three farmers sold chickens at the local market. The first farmer had 10 chickens, the second had 16 chickens, and the third had 26 chickens. They agreed to sell all their chickens at the same price initially and then lowered their prices to the same new price by lunchtime. By the end of the day, each farmer colle...
[ "aops_c4_high_school_math" ]
[ "cot" ]
{ "cot": 11 }
11
0
0
omr-ws-6b4b59950da77157982585d62a27726d689bbf9898626d86bae4daceb5396edd
Three faucets fill a 100-gallon tub in 6 minutes. How long, in seconds, does it take six faucets to fill a 25-gallon tub? Assume that all faucets dispense water at the same rate.
[ "45" ]
[ "Three faucets fill a 100-gallon tub in 6 minutes. How long, in seconds, does it take six faucets to fill a 25-gallon tub? Assume that all faucets dispense water at the same rate." ]
[ "MATH_training_set" ]
[ "cot" ]
{ "cot": 16 }
16
0
0
omr-ws-f8d5f206cb24008e772c4c535686e1eb33ba7a2bcfa95bce082da273d08c89fb
Three fixed circles pass through points A and B. Let X be a variable point on the first circle different from A and B. The line AX intersects the other two circles at points Y and Z, with Y between X and Z. If the ratio XY/YZ is constant and equals k, find the value of k when the radii of the three circles are 5, 7, an...
[ "\\dfrac{8 + 10\\sqrt{2}}{17}" ]
[ "Three fixed circles pass through points A and B. Let X be a variable point on the first circle different from A and B. The line AX intersects the other two circles at points Y and Z, with Y between X and Z. If the ratio XY/YZ is constant and equals k, find the value of k when the radii of the three circles are 5, ...
[ "aops_c6_high_school_olympiads" ]
[ "additional_problems" ]
{ "additional_problems": 1 }
1
0
0
omr-ws-bd728f1b6e935f0a647eed74cb130b190fffa36f3897f008de58c3e63251d09c
Three fixed circles pass through the points $A$ and $B$. Let $X$ be a variable point on the first circle different from $A$ and $B$. The line $AX$ intersects the other two circles at $Y$ and $Z$ (with $Y$ between $X$ and $Z$). If the radii of the three circles are $r_1$, $r_2$, and $r_3$ respectively, and $AB = d$, fin...
[ "\\dfrac{\\sqrt{r_2^2 - \\dfrac{d^2}{4}} - \\sqrt{r_1^2 - \\dfrac{d^2}{4}}}{\\sqrt{r_3^2 - \\dfrac{d^2}{4}} - \\sqrt{r_2^2 - \\dfrac{d^2}{4}}}" ]
[ "Three fixed circles pass through the points $A$ and $B$. Let $X$ be a variable point on the first circle different from $A$ and $B$. The line $AX$ intersects the other two circles at $Y$ and $Z$ (with $Y$ between $X$ and $Z$). If the radii of the three circles are $r_1$, $r_2$, and $r_3$ respectively, and $AB = d$...
[ "aops_c6_high_school_olympiads" ]
[ "cot", "genselect" ]
{ "cot": 3, "genselect": 8 }
11
0
0