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16,600
Given a point P $(x, y)$ on the ellipse $\frac{x^2}{4} + \frac{y^2}{9} = 1$, find the minimum distance from point P to the line $2x + y - 10 = 0$.
\sqrt{5}
68.75
16,601
A circle has a radius of 6. What is the area of the smallest square that can entirely contain this circle, and what is the circumference of the circle?
12\pi
84.375
16,602
If $4 \in \{a^2-3a, a\}$, then the value of $a$ equals ____.
-1
15.625
16,603
Given that $\tan \alpha = 2$, where $\alpha$ is an angle in the first quadrant, find the value of $\sin 2\alpha + \cos \alpha$.
\dfrac{4 + \sqrt{5}}{5}
96.875
16,604
Cara is sitting at a circular table with her seven friends. How many different possible pairs of people could Cara be sitting between?
21
84.375
16,605
If \(a, c, d\) are integers, \(b\) is a positive integer, and they satisfy \(a + b = c\), \(b + c = d\), and \(c + d = a\), then the maximum value of \(a + b + c + d\) is:
-5
89.84375
16,606
Given that three balls are randomly and independently tossed into bins numbered with the positive integers such that for each ball, the probability that it is tossed into bin i is $3^{-i}$ for i = 1,2,3,..., find the probability that all balls end up in consecutive bins.
1/702
51.5625
16,607
In 2005, the ages of a brother and sister were 16 and 10 years old, respectively. In which year was the brother's age twice that of the sister's?
2001
96.875
16,608
In triangle $\triangle ABC$, the sides opposite to angles $A$, $B$, and $C$ are $a$, $b$, and $c$ respectively, and $c\sin\frac{A+C}{2}=b\sin C$. $(1)$ Find angle $B$; $(2)$ Let $BD$ be the altitude from $B$ to side $AC$, and $BD=1$, $b=\sqrt{3}$. Find the perimeter of $\triangle ABC$.
3 + \sqrt{3}
48.4375
16,609
The sum of an infinite geometric series is $64$ times the series that results if the first four terms of the original series are removed. What is the value of the series' common ratio?
\frac{1}{2}
46.09375
16,610
Given the function $f(x)=-\frac{1}{3}x^{3}+bx^{2}+cx+bc$ has an extreme value of $-\frac{4}{3}$ at $x=1$, find the value of $b$.
-1
25
16,611
Convert the binary number $101101110_{(2)}$ to a decimal number and then to an octal number $({\ }\_{(8)})$.
556_{(8)}
13.28125
16,612
Quantities $a$ and $b$ vary inversely. When $a$ is $800$, $b$ is $0.5$. If the product of $a$ and $b$ increases by $200$ when $a$ is doubled, what is $b$ when $a$ is $1600$?
0.375
4.6875
16,613
Given $( \sqrt {x}+ \dfrac {2}{x^{2}})^{n}$, the ratio of the coefficient of the fifth term to the coefficient of the third term in its expansion is $56:3$. (Ⅰ) Find the constant term in the expansion; (Ⅱ) When $x=4$, find the term with the maximum binomial coefficient in the expansion.
\dfrac {63}{256}
27.34375
16,614
Estimate the number of primes among the first thousand primes divide some term of the sequence \[2^0+1,2^1+1,2^2+1,2^3+1,\ldots.\] An estimate of $E$ earns $2^{1-0.02|A-E|}$ points, where $A$ is the actual answer. *2021 CCA Math Bonanza Lightning Round #5.4*
10
1.5625
16,615
Given the equation of the parabola $y^{2}=4x$, and a line $l$ passing through its focus $F$ intersecting the parabola at points $A$ and $B$. If $S_{\triangle AOF}=3S_{\triangle BOF}$ (where $O$ is the origin), calculate the length of $|AB|$.
\dfrac {16}{3}
25
16,616
If $a$ and $b$ are two positive numbers, and the three numbers $a$, $b$, and $-4$ can be rearranged to form both an arithmetic sequence and a geometric sequence, then the value of $a+b$ is __________.
10
52.34375
16,617
In $\triangle ABC$, the sides opposite to angles $A$, $B$, and $C$ are denoted as $a$, $b$, and $c$ respectively, and it is given that $2c-2a\cos B=b$. $(1)$ Find the size of angle $A$; $(2)$ If the area of $\triangle ABC$ is $\frac{\sqrt{3}}{4}$, and $c^{2}+ab\cos C+a^{2}=4$, find $a$.
\frac{\sqrt{7}}{2}
25.78125
16,618
Calculate the value of the polynomial $f(x) = 3x^6 + 4x^5 + 5x^4 + 6x^3 + 7x^2 + 8x + 1$ at $x=0.4$ using Horner's method, and then determine the value of $v_1$.
5.2
57.03125
16,619
Given plane vectors $\overrightarrow{a}=(-1,2)$ and $\overrightarrow{b}=(1,-4)$. $(1)$ If $4\overrightarrow{a}+\overrightarrow{b}$ is perpendicular to $k\overrightarrow{a}-\overrightarrow{b}$, find the value of the real number $k$. $(2)$ If $\theta$ is the angle between $4\overrightarrow{a}+\overrightarrow{b}$ and ...
-\frac{3}{4}
87.5
16,620
Mark rolls 5 fair 8-sided dice. What is the probability that at least three of the dice show the same number?
\frac{1052}{8192}
0
16,621
A school has between 130 and 210 students enrolled. Every afternoon, all the students gather to participate in a singing session. The students are divided into eight distinct groups. If two students are absent from school, the groups can all have the same number of students. What is the sum of all possible numbers of s...
1870
1.5625
16,622
If $\tan(\alpha-\beta) = \frac{1}{2}$ and $\tan(\alpha+\beta) = \frac{1}{3}$, calculate the value of $\tan 2\beta$.
- \frac{1}{7}
75.78125
16,623
Given an ellipse with foci at $(1,0)$ and $(-1,0)$, it intersects with the line $y=x-2$. Determine the maximum value of the eccentricity of this ellipse.
\frac{\sqrt{10}}{5}
48.4375
16,624
Let \( A \) and \( B \) be points on the curve \( xy = 1 \) (where \( x > 0 \) and \( y > 0 \)) in the Cartesian coordinate system \( xOy \). Given the vector \( \vec{m} = (1, |OA|) \), find the minimum value of the dot product \( \vec{m} \cdot \overrightarrow{OB} \).
2 \sqrt[4]{2}
41.40625
16,625
For the power function $y = (m^2 - m - 1)x^{2m+1}$, if it is a decreasing function for $x \in (0, +\infty)$, then the value of the real number $m$ is ______.
-1
39.0625
16,626
The positive integers $m$ and $n$ satisfy $8m + 9n = mn + 6$. Find the maximum value of $m$.
75
80.46875
16,627
What is the value of \(6102 - 2016\)?
4086
75
16,628
During the "Cool Summer Happy Shopping" promotion held in a certain shopping mall, Xiao Yang bought $m$ items of type A goods priced at $5$ yuan each, and $n$ items of type B goods priced at $17 yuan each, spending a total of $203$ yuan. Then the maximum value of $m+n$ is ______.
31
48.4375
16,629
Given a decreasing arithmetic sequence $\{a_n\}$, if $a_1 + a_{100} = 0$, find the value of $n$ when the sum of the first $n$ terms, $S_n$, is maximized.
50
96.875
16,630
A quarry wants to sell a large pile of gravel. At full price, the gravel would sell for $3200$ dollars. But during the first week the quarry only sells $60\%$ of the gravel at full price. The following week the quarry drops the price by $10\%$ , and, again, it sells $60\%$ of the remaining gravel. Each week, the...
3000
77.34375
16,631
How many different four-digit numbers, divisible by 4, can be made from the digits 1, 2, 3, and 4, a) if each digit can be used only once? b) if each digit can be used multiple times?
64
79.6875
16,632
In $\triangle ABC$, $a=5$, $b=8$, $C=60^{\circ}$, the value of $\overrightarrow{BC}\cdot \overrightarrow{CA}$ is $\_\_\_\_\_\_$.
-20
77.34375
16,633
The inclination angle of the line $x+ \sqrt {3}y+c=0$ is \_\_\_\_\_\_.
\frac{5\pi}{6}
52.34375
16,634
A store offers an initial discount of 25% on all its merchandise. Subsequently, an additional discount of 10% is applied to the already reduced prices. The store advertises that the final price of the goods is 35% less than the original price. What is the actual percentage difference between the store's claimed discoun...
2.5\%
97.65625
16,635
The circumference of a circle is 100. The diameter of this circle is equal to:
$\frac{100}{\pi}$
0
16,636
Given the function $f(x)= \begin{vmatrix} x & \frac {1}{x} \\ -2 & 1\end{vmatrix}$ ($x>0$), its range is set $A$, (1) If the universal set $U=\mathbb{R}$, find $C_UA$; (2) For any $x \in (0, \frac {1}{2}]$, the inequality $f(x)+a \geq 0$ always holds, find the range of the real number $a$; (3) Let $P$ be any poin...
-1
73.4375
16,637
A line $l$ passing through the focus of the parabola $y=4x^2$ intersects the parabola at points $A(x_1, y_1)$ and $B(x_2, y_2)$. If $y_1+y_2=2$, then the length of segment $AB$ equals \_\_\_\_\_\_.
\frac{17}{8}
39.0625
16,638
Molly and Jake play a game where Molly picks an integer between 1 and 720 inclusive, and Jake divides 720 by that integer and states whether the quotient is an integer. How many integers could Molly pick such that Jake’s quotient is an integer?
30
60.15625
16,639
Add 74.6893 to 23.152 and round to the nearest hundredth.
97.84
96.875
16,640
In how many ways can the digits of $45,\!502,\!2$ be arranged to form a 6-digit number? (Remember, numbers cannot begin with 0.)
150
56.25
16,641
In $\triangle ABC$, the sides opposite to angles $A$, $B$, and $C$ are denoted as $a$, $b$, and $c$, respectively. Given vectors $\overrightarrow{m}=(\sin B+\sin C, \sin A-\sin B)$ and $\overrightarrow{n}=(\sin B-\sin C, \sin(B+C))$, and $\overrightarrow{m} \perp \overrightarrow{n}$. (1) Find the magnitude of angle $C$...
\frac{4\sqrt{3}-3}{10}
26.5625
16,642
If \(a\), \(b\), \(c\), \(d\), \(e\), and \(f\) are integers for which \(729x^3+64 = (ax^2 + bx + c)(dx^2 + ex + f)\) for all \(x\), then what is \(a^2+b^2+c^2+d^2+e^2+f^2\)?
8210
3.90625
16,643
Given the polynomial function $f(x) = 2x^5 - 5x^4 - 4x^3 + 3x^2 - 6x + 7$, using the Horner's method when $x = 5$, we can obtain $v_2 = \_$.
21
92.96875
16,644
Find the greatest possible value of $pq + r$ , where p, q, and r are (not necessarily distinct) prime numbers satisfying $pq + qr + rp = 2016$ .
1008
53.125
16,645
It is known that Xiao Li has a probability of hitting the bullseye of $40\%$ each time he shoots. Now, the method of random simulation is used to estimate the probability that Xiao Li hits the bullseye exactly twice in three shots. First, a calculator is used to generate random integers between $0$ and $9$, with $0$, $...
0.30
0.78125
16,646
Given that point $A(-2,α)$ lies on the terminal side of angle $α$ and $\sin α=- \dfrac{ \sqrt{5}}{5}$. (1) Find the values of $α$, $\cos α$, and $\tan α$. (2) Find the value of $\dfrac{\cos ( \dfrac{π}{2}+α)\sin (-π-α)}{\cos ( \dfrac{11π}{2}-α)\sin ( \dfrac{9π}{2}+α)}$.
\dfrac {1}{2}
68.75
16,647
Determine the sum of all real numbers $x$ that are not in the domain of the function $$g(x) = \frac{1}{2+\frac{1}{3+\frac{1}{x}}}.$$
-\frac{13}{21}
67.96875
16,648
Let the function $f(x)=\begin{cases} 2^{x}+\int_{0}^{1}{3(\sqrt{x}-x^{2})dx} & (x\geqslant 4) \\ f(x+2) & (x < 4) \end{cases}$. Evaluate the expression $f(\log_{2}3)$.
49
60.9375
16,649
Calculate the value of $n$ such that \[(1 + \tan 1^\circ)(1 + \tan 2^\circ)(1 + \tan 3^\circ) \dotsm (1 + \tan 30^\circ) = 2^n.\]
15
17.96875
16,650
Determine the smallest positive integer $n$ such that $n^2$ is divisible by 50 and $n^3$ is divisible by 294.
210
81.25
16,651
The Fibonacci numbers are defined by $F_1=F_2=1$ and $F_n=F_{n-1}+F_{n-2}$ for $n>2$ . It is well-known that the sum of any $10$ consecutive Fibonacci numbers is divisible by $11$ . Determine the smallest integer $N$ so that the sum of any $N$ consecutive Fibonacci numbers is divisible by $12$ .
24
96.09375
16,652
Define a function $f(x)$ on $\mathbb{R}$ that satisfies $f(x+6)=f(x)$. When $x \in [-3,3)$, $f(x)=\begin{cases} -(x+2)^2, & -3 \leqslant x < -1 \\ x, & -1 \leqslant x < 3 \end{cases}$. Find $f(4)$ and the value of $f(1)+f(2)+f(3)+\ldots+f(2016)+f(2017)$.
337
32.03125
16,653
A farmer buys 600 cows. He sells 500 of them for the price he paid for all 600 cows. The remaining 100 cows are sold for 10% more per cow than the price of the 500 cows. Calculate the percentage gain on the entire transaction.
22\%
69.53125
16,654
A right circular cylinder with radius 3 is inscribed in a hemisphere with radius 8 so that its bases are parallel to the base of the hemisphere. What is the height of this cylinder?
\sqrt{55}
22.65625
16,655
Given the curve $y=\sin x$ ($0 \leq x \leq \pi$) and the line $y= \frac {1}{2}$, calculate the area of the enclosed shape formed by these two functions.
\sqrt {3}- \frac {\pi}{3}
0
16,656
A pawn moves on a $6 \times 6$ chessboard. It starts from the bottom-left square. At each step, it can either jump to the square directly to its right or the square directly above it. It must reach the top-right square, such that it never lies strictly above the diagonal connecting the starting square and the destinati...
132
64.84375
16,657
Arnaldo claimed that one billion is the same as one million millions. Professor Piraldo corrected him and said, correctly, that one billion is the same as one thousand millions. What is the difference between the correct value of one billion and Arnaldo's assertion? (a) 1000 (b) 999000 (c) 1000000 (d) 999000000 (e) 999...
999000000000
88.28125
16,658
Suppose (4-4): Coordinate Systems and Parametric Equations In the rectangular coordinate system $xOy$, the parametric equations of the curve $C$ are $\begin{cases} x=3\cos \alpha \\ y=\sin \alpha \end{cases}$, where $\alpha$ is the parameter. Establish a polar coordinate system with the coordinate origin $O$ as the po...
\frac{18\sqrt{2}}{5}
25.78125
16,659
The minimum value of the polynomial $x^2 + y^2 - 6x + 8y + 7$ is ______.
-18
89.84375
16,660
Two different natural numbers are selected from the set $\{1, 2, 3, \ldots, 7\}$. What is the probability that the greatest common divisor of these two numbers is one? Express your answer as a common fraction.
\frac{17}{21}
0.78125
16,661
What is the value of $\sqrt{64 \times \sqrt{49}}$?
8\sqrt{7}
32.8125
16,662
An isosceles triangle with a base of $\sqrt{2}$ has medians intersecting at a right angle. Calculate the area of this triangle.
\frac{3}{2}
3.90625
16,663
In the 2016 art exam of a certain high school, there were 6 contestants, including 3 females and 3 males. Now, these six contestants are to perform their talents in sequence. If any two of the three males cannot perform consecutively, and the female contestant A cannot be the first to perform, then calculate the number...
132
28.90625
16,664
Griffin and Hailey run for $45$ minutes on a circular track. Griffin runs counterclockwise at $260 m/min$ and uses the outer lane with a radius of $50$ meters. Hailey runs clockwise at $310 m/min$ and uses the inner lane with a radius of $45$ meters, starting on the same radial line as Griffin. Determine how many times...
86
1.5625
16,665
Given that point $P$ is a moving point on the parabola $y^{2}=4x$, the minimum value of the sum of the distance from point $P$ to line $l$: $2x-y+3=0$ and the $y$-axis is ___.
\sqrt{5}-1
12.5
16,666
Given that point $P$ is a moving point on circle $C$: $x^{2}+y^{2}-2x-4y+1=0$, the maximum distance from point $P$ to a certain line $l$ is $6$. If a point $A$ is taken arbitrarily on line $l$ to form a tangent line $AB$ to circle $C$, with $B$ being the point of tangency, then the minimum value of $AB$ is _______.
2\sqrt{3}
92.1875
16,667
Given that the function $f\left(x\right)$ is an even function on $R$, and $f\left(x+2\right)$ is an odd function. If $f\left(0\right)=1$, then $f\left(1\right)+f\left(2\right)+\ldots +f\left(2023\right)=\_\_\_\_\_\_$.
-1
14.84375
16,668
Samantha has 10 green marbles and 5 purple marbles in a bag. She removes a marble at random, records the color, puts it back, and then repeats this process until she has withdrawn 7 marbles. What is the probability that exactly four of the marbles that she removes are green? Express your answer as a decimal.
0.256
8.59375
16,669
Find the sum of the first eight prime numbers that have a units digit of 3.
404
0
16,670
Let $T$ be the sum of all the real coefficients of the expansion of $(1 + ix)^{2018}$. What is $\log_2(T)$?
1009
53.90625
16,671
Evaluate the expression $-20 + 15 \times (4^{\div -1} \times 2)$.
-12.5
45.3125
16,672
The length of the longer side of rectangle \(R'\) is \(15\%\) more than the length of a side of square \(S'\). The length of the shorter side of rectangle \(R'\) is \(5\%\) less than the length of a side of square \(S'\). What is the ratio of the area of rectangle \(R'\) to the area of square \(S'\)? Express your answe...
\frac{10925}{10000}
0
16,673
The graph of $y = ax^2 + bx + c$ has a maximum value of 75, and passes through the points $(-3,0)$ and $(3,0)$. Find the value of $a + b + c$ at $x = 2$.
\frac{125}{3}
42.96875
16,674
If \( x_{i}=\frac{i}{101} \), then the value of \( S=\sum_{i=0}^{101} \frac{x_{i}^{3}}{3 x_{i}^{2}-3 x_{i}+1} \) is
51
75.78125
16,675
A dodecahedron consists of two pentagonal-based pyramids glued together along their pentagonal bases, forming a polyhedron with 12 faces. Consider an ant at the top vertex of one of the pyramids, selecting randomly one of the five adjacent vertices, designated as vertex A. From vertex A, the ant then randomly selects o...
\frac{1}{5}
38.28125
16,676
If \(\sum_{n = 0}^{\infty} \cos^{2n} \theta = \frac{9}{2}\), what is the value of \(\cos{4\theta}\)?
-\frac{31}{81}
92.96875
16,677
Given non-zero plane vectors $\overrightarrow{a}$, $\overrightarrow{b}$, $\overrightarrow{c}$ satisfy $|\overrightarrow{a}|=2$, $|\overrightarrow{b}-\overrightarrow{c}|=1$. If the angle between $\overrightarrow{a}$ and $\overrightarrow{b}$ is $\frac{π}{3}$, calculate the minimum value of $|\overrightarrow{a}-\overright...
\sqrt{3} - 1
12.5
16,678
In the rectangular coordinate system $xOy$, the parametric equations of line $l$ are given by $\begin{cases} x=2t \\ y=-2-t \end{cases}$ (where $t$ is the parameter). In the polar coordinate system (using the same length unit as the rectangular coordinate system and with the origin $O$ as the pole and the polar axis co...
\frac{12\sqrt{5}}{5}
82.03125
16,679
Given the function $f(x)=\sqrt{3}\sin x\cos x+\cos^{2}x$. (1) Find the value of $f(\frac{\pi }{24})$; (2) If the function $f(x)$ is monotonically increasing in the interval $[-m,m]$, find the maximum value of the real number $m$.
\frac{\pi}{6}
84.375
16,680
If $A = 3009 \div 3$, $B = A \div 3$, and $Y = A - 2B$, then what is the value of $Y$?
335
32.03125
16,681
What is the value of $\frac{3}{5} + \frac{2}{3} + 1\frac{1}{15}$?
2\frac{1}{3}
18.75
16,682
Find the largest prime $p$ such that $p$ divides $2^{p+1} + 3^{p+1} + 5^{p+1} + 7^{p+1}$ .
29
75.78125
16,683
What is the smallest positive multiple of $17$ that is $3$ more than a multiple of $76$?
459
12.5
16,684
On Arbor Day, 20 students in a class planted trees along one side of a straight road, with each person planting one tree, and the distance between two adjacent trees being 10 meters. Initially, it is required to place all the saplings next to one of the tree pits so that the total distance traveled back and forth by ea...
2000
34.375
16,685
Let $ABC$ be an isosceles right triangle with $\angle A=90^o$ . Point $D$ is the midpoint of the side $[AC]$ , and point $E \in [AC]$ is so that $EC = 2AE$ . Calculate $\angle AEB + \angle ADB$ .
135
62.5
16,686
Mathematical operation refers to the ability to solve mathematical problems based on clear operation objects and operation rules. Because of operations, the power of numbers is infinite; without operations, numbers are just symbols. Logarithmic operation and exponential operation are two important types of operations. ...
\frac{1}{2}
83.59375
16,687
Given that $0 < α < \frac {π}{2}$, and $\cos (2π-α)-\sin (π-α)=- \frac { \sqrt {5}}{5}$. (1) Find the value of $\sin α+\cos α$ (2) Find the value of $\frac {2\sin α\cos α-\sin ( \frac {π}{2}+α)+1}{1-\cot ( \frac {3π}{2}-α)}$.
\frac {\sqrt {5}-9}{5}
0
16,688
What is the smallest positive multiple of $225$ that can be written using digits $0$ and $1$ only?
11111111100
99.21875
16,689
A park is in the shape of a regular hexagon $2$ km on a side. Starting at a corner, Alice walks along the perimeter of the park for a distance of $5$ km. How many kilometers is she from her starting point?
$\sqrt{13}$
0
16,690
Given that Chloe's telephone numbers have the form $555-ab-cdef$, where $a$, $b$, $c$, $d$, $e$, and $f$ are distinct digits, in descending order, and are chosen between $1$ and $8$, calculate the total number of possible telephone numbers that Chloe can have.
28
100
16,691
The numbers $\sqrt{3v-2}$, $\sqrt{3v+1}$, and $2\sqrt{v}$ are the side lengths of a triangle. What is the measure of the largest angle?
90
28.125
16,692
Given that $\binom{24}{5}=42504$, and $\binom{24}{6}=134596$, find $\binom{26}{6}$.
230230
67.96875
16,693
Given a sequence $\{a_n\}$ that satisfies $3a_{n+1}+a_n=0$ and $a_2=-\frac{4}{3}$, find the sum of the first $10$ terms of $\{a_n\}$.
3(1-3^{-10})
0
16,694
The set \( M = \left\{(x, y) \mid \log_{4} x + \log_{4} y \leq 1, x, y \in \mathbf{N}^{*}\right\} \) has how many subsets?
256
93.75
16,695
Compute $\cos \left( \arctan \frac{3}{4} \right)$ and $\tan \left( \arctan \frac{3}{4} \right)$.
\frac{3}{4}
92.1875
16,696
Find the smallest positive integer \( k \) such that \( (k-10)^{5026} \geq 2013^{2013} \).
55
15.625
16,697
In the expansion of $(1+x){(x-\frac{2}{x})}^{3}$, calculate the coefficient of $x$.
-6
85.15625
16,698
Points $F$, $G$, $H$, $I$, and $J$ are positioned in 3-dimensional space with $FG = GH = HI = IJ = JF = 3$ and $\angle FGH = \angle HIJ = \angle JIF = 90^\circ$. The plane of triangle $FGH$ is parallel to $\overline{IJ}$. Determine the area of triangle $GIJ$.
4.5
0.78125
16,699
What is the result of the correct calculation for the product $0.08 \times 3.25$?
0.26
98.4375