conversations listlengths 2 2 | system stringclasses 1
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[
{
"role": "user",
"content": "Evaluate the sum ${n\\choose0}^2+{n\\choose1}^2+{n\\choose2}^2+\\dots+{n\\choose{n}}^2$ using a counting argument."
},
{
"role": "assistant",
"content": "To evaluate the sum \\(\\binom{n}{0}^2 + \\binom{n}{1}^2 + \\binom{n}{2}^2 + \\dots + \\binom{n}{n}^2\\) using a... | You are a helpful assistant. |
[
{
"role": "user",
"content": "In a group of 50 people, 36 like dogs and 25 like cats. Let \\( x \\) denote the number of people who like both dogs and cats. How many different values can \\( x \\) take?"
},
{
"role": "assistant",
"content": "To determine the number of different values \\( x \\) ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "If there is a 20% chance that Jane will bump into Taylor in the hallway between period 2 and 3, and if she bumps into Taylor, there is a 25% chance that she will be late for class, what is the probability that Jane will be late for class on any given day?"
},
{
"role": ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Determine the units in the ring \\( R \\) of the form \\( a + b\\sqrt{-5} \\) where \\( a \\) and \\( b \\) are integers."
},
{
"role": "assistant",
"content": "To determine the units in the ring \\( R = \\{ a + b\\sqrt{-5} \\mid a, b \\in \\mathbb{Z} \\} \\), we ne... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Contractor Steve agreed to complete a job in 30 days. After 6 days he found that the 8 people assigned to the work had already done $\\frac{1}{3}$ of the job. If everyone works at the same rate, what is the least number of people he must keep on the job to ensure that the job w... | You are a helpful assistant. |
[
{
"role": "user",
"content": "It can be shown that for any positive integer $n,$\n\\[\\begin{pmatrix} 1 & 1 \\\\ 1 & 0 \\end{pmatrix}^n = \\begin{pmatrix} F_{n + 1} & F_n \\\\ F_n & F_{n - 1} \\end{pmatrix},\\]where $F_n$ denotes the $n$th Fibonacci number.\n\nCompute $F_{784} F_{786} - F_{785}^2.$"
},
... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Ms. Marks is selecting students for a committee that must consist of three seniors and five juniors. Six senior volunteers are available. What is the least number of junior volunteers needed if Ms. Marks wants at least 100 different possible ways to pick the committee?"
},
... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Evaluate the definite integral $\\int_0^{\\frac{\\pi}{2}} (\\pi - 2x)\\cos x\\ dx$."
},
{
"role": "assistant",
"content": "To evaluate the definite integral \\(\\int_0^{\\frac{\\pi}{2}} (\\pi - 2x)\\cos x \\, dx\\), we will use integration by parts. The integration ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "We have $2n$ batteries $(n>2)$, with $n$ full batteries and $n$ empty ones. What is the smallest number of tries needed to ensure that we have at least 2 full batteries to make a lamp work?"
},
{
"role": "assistant",
"content": "To determine the smallest number of t... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Given a positive integer $n$ and a number $c$, where $-1 < c < 1$, for how many values of $q$ in $[0, 2\\pi)$ is $\\sin(nq) = c$?"
},
{
"role": "assistant",
"content": "To determine the number of values of \\( q \\) in the interval \\([0, 2\\pi)\\) such that \\(\\si... | You are a helpful assistant. |
[
{
"role": "user",
"content": "The numbers $1$ through $8$ are written on the vertices of a cube such that each vertex has a distinct number written on it. On the center of each face of this cube, the sum of the numbers written on the four vertices of this face is written. Find the sum of the numbers written... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How do you graph the polar point \\((2, \\frac{3\\pi}{4})\\)?"
},
{
"role": "assistant",
"content": "To graph the polar point \\((2, \\frac{3\\pi}{4})\\):\n\n1. **Identify the angle**: The angle \\(\\frac{3\\pi}{4}\\) radians corresponds to \\(135^\\circ\\), which i... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How many zeros are at the end of the base-3 expression of \\( 27! \\)?"
},
{
"role": "assistant",
"content": "To determine the number of trailing zeros in the base-3 expression of \\(27!\\), we need to find the highest power of 3 that divides \\(27!\\). This is equi... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Bill is sent to a donut shop to purchase exactly six donuts. If the shop has four kinds of donuts and Bill is to get at least one of each kind, how many combinations will satisfy Bill's order requirements?"
},
{
"role": "assistant",
"content": "To determine the numb... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Evaluate the integral $\\int_{0}^{\\infty }\\sin (x^2)dx$."
},
{
"role": "assistant",
"content": "To evaluate the integral \\(\\int_{0}^{\\infty} \\sin(x^2) \\, dx\\), we will use a substitution and properties of the Gamma function.\n\n1. **Substitution**:\n Let \... | You are a helpful assistant. |
[
{
"role": "user",
"content": "What is the first perfect square? Is it 0 or 1?"
},
{
"role": "assistant",
"content": "To determine the first perfect square, we need to recall the definition of a perfect square. A perfect square is an integer that can be expressed as the square of another integer.... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Evaluate the expression \\[ \\frac{a+2}{a+1} \\cdot \\frac{b-1}{b-2} \\cdot \\frac{c + 8}{c+6} , \\] given that $c = b-10$, $b = a+2$, $a = 4$, and none of the denominators are zero."
},
{
"role": "assistant",
"content": "To evaluate the expression \\(\\frac{a+2}{a+... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Find $\\ln{-1}$."
},
{
"role": "assistant",
"content": "To find \\(\\ln(-1)\\), we need to use the properties of complex logarithms. The natural logarithm function \\(\\ln(x)\\) is not defined for negative real numbers in the real number system, but it can be extend... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Given the sequence defined by \\( u_0 = \\frac{1}{3} \\) and \\( u_{n+1} = 2u_n^2 - 1 \\), find a closed form for \\( u_n \\)."
},
{
"role": "assistant",
"content": "To find a closed-form expression for the sequence defined by \\( u_0 = \\frac{1}{3} \\) and \\( u_{n... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Express the volume $W$ obtained by rotating the region $R$ bounded by the curve $y=x^2-x^4$ and the $x$-axis in the first quadrant about the $y$-axis as an integral using the cylindrical shells method (with $dx$)."
},
{
"role": "assistant",
"content": "To find the v... | You are a helpful assistant. |
[
{
"role": "user",
"content": "I take variable $b$, double it, and add four. I subtract $4b$ from this new expression, and divide the resulting difference by two. What is my final expression in simplest form?"
},
{
"role": "assistant",
"content": "To solve the problem, we start with the variabl... | You are a helpful assistant. |
[
{
"role": "user",
"content": "When does \\( x^2 \\) reach its minimum value?"
},
{
"role": "assistant",
"content": "To determine when \\( x^2 \\) reaches its minimum value, we can use both algebraic and calculus-based approaches.\n\nFirst, observe that for any real number \\( x \\), \\( x^2 \\ge... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Given $\\log 1.23 = 0.07$, find $10^{1.07}$."
},
{
"role": "assistant",
"content": "To find \\(10^{1.07}\\) given that \\(\\log 1.23 = 0.07\\), we can proceed as follows:\n\n1. Recognize that \\(\\log 1.23 = 0.07\\) implies \\(\\log_{10} 1.23 = 0.07\\). By the defin... | You are a helpful assistant. |
[
{
"role": "user",
"content": "What is the probability that each drawn pair is of different colors (one Black and one White) when drawing two balls at a time from a bag containing 4 Black balls and 4 White balls until the bag is empty?"
},
{
"role": "assistant",
"content": "To find the probabilit... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Solve the recurrence relation $a_{n} = 9 a_{n-1} - 56 n + 63$ with the initial condition $a_{0} = 2$."
},
{
"role": "assistant",
"content": "To solve the recurrence relation \\( a_n = 9a_{n-1} - 56n + 63 \\) with the initial condition \\( a_0 = 2 \\), we proceed as ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "In how many ways can 7 persons sit around a round table such that no two arrangements have the same neighbors for all individuals?"
},
{
"role": "assistant",
"content": "To determine the number of ways 7 persons can sit around a round table such that no two arrangem... | You are a helpful assistant. |
[
{
"role": "user",
"content": "At a math contest, $57$ students are wearing blue shirts, and another $75$ students are wearing yellow shirts. The $132$ students are assigned into $66$ pairs. In exactly $23$ of these pairs, both students are wearing blue shirts. In how many pairs are both students wearing yel... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Given matrices $\\boldsymbol{A}=\\begin{bmatrix} 1 & 3 & -4 \\\\ -1 & -3 & 4 \\end{bmatrix}$ and $\\boldsymbol{B}=\\begin{bmatrix} 1 & 3 \\\\ -1 & 8 \\end{bmatrix}$, find the product $AB$."
},
{
"role": "assistant",
"content": "To find the product \\( \\boldsymbol{A... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Find the limit \\(\\lim_{x \\to -\\infty} \\left(\\frac{x e^x}{1 - e^x}\\right)\\)."
},
{
"role": "assistant",
"content": "To find the limit \\(\\lim_{x \\to -\\infty} \\left(\\frac{x e^x}{1 - e^x}\\right)\\), we analyze the behavior of the numerator and the denomin... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Find the limit of the sequence \\( u_n = n^{\\alpha} \\sin n \\) as \\( n \\to \\infty \\), where \\( \\alpha > 0 \\)."
},
{
"role": "assistant",
"content": "To find the limit of the sequence \\( u_n = n^{\\alpha} \\sin n \\) as \\( n \\to \\infty \\), where \\( \\a... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Andi, Beni, Coki, Doni, and Edo are playing a game where each player is either a mousedeer (who always tells the truth) or a wolf (who always lies). Andi says that Beni is a mousedeer. Coki says Doni is a wolf, while Edo says Andi is not a wolf. Beni says Coki is not a mousedee... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Find the maximal dimension of a subspace of \\( M_n(K) \\) consisting only of nilpotent matrices, where \\( K = \\mathbb{R} \\) or \\( \\mathbb{C} \\)."
},
{
"role": "assistant",
"content": "To find the maximal dimension of a subspace of \\( M_n(K) \\) consisting on... | You are a helpful assistant. |
[
{
"role": "user",
"content": "A rectangular tile measures 3 inches by 4 inches. What is the fewest number of these tiles that are needed to completely cover a rectangular region that is 2 feet by 5 feet?"
},
{
"role": "assistant",
"content": "To determine the fewest number of 3-inch by 4-inch ti... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How many permutations of the word IMPURE are there?"
},
{
"role": "assistant",
"content": "To determine the number of permutations of the word \"IMPURE,\" we first note that the word consists of 6 distinct letters: I, M, P, U, R, and E. \n\nSince all the letters are... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Given a positive integer in its base-10 representation, if you repeatedly add it to its reverse, will you always eventually reach a palindrome? If so, provide a bound on the number of iterations required. If not, find or describe a number that never palindromizes."
},
{
... | You are a helpful assistant. |
[
{
"role": "user",
"content": "In a singles tennis tournament with 10 players, in how many ways can the players be organised into 5 pairs?"
},
{
"role": "assistant",
"content": "To determine the number of ways to organize 10 players into 5 pairs, we can use the concept of combinations and adjust ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "In triangle $ABC$, $AB = 16$, $AC = 24$, $BC = 19$, and $AD$ is an angle bisector. Find the ratio of the area of triangle $ABD$ to the area of triangle $ACD$. (Express your answer as a fraction in lowest terms.)"
},
{
"role": "assistant",
"content": "To solve the ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "If $\\sin x = 3 \\cos x,$ then what is $\\sin x \\cos x$?"
},
{
"role": "assistant",
"content": "Given the equation \\(\\sin x = 3 \\cos x\\), we need to find the value of \\(\\sin x \\cos x\\).\n\nFirst, we use the Pythagorean identity \\(\\sin^2 x + \\cos^2 x = 1\... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How many arrangements of the word \"SENIOR\" have the three vowels occurring together?"
},
{
"role": "assistant",
"content": "To solve the problem of finding the number of arrangements of the word \"SENIOR\" where the three vowels (E, I, O) occur together, we can fo... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Round 3967149.1587234 to the nearest integer."
},
{
"role": "assistant",
"content": "To round the number 3967149.1587234 to the nearest integer, we follow these steps:\n\n1. Identify the integer part and the decimal part of the number.\n - The integer part is 3967... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How many 5-digit palindromes are there if the first digit must be 1 and the middle digit must be either 2 or 3?"
},
{
"role": "assistant",
"content": "To determine the number of 5-digit palindromes where the first digit is 1 and the middle digit is either 2 or 3, we... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Circles with centers of $(2,2)$ and $(17,10)$ are both tangent to the $x$-axis. What is the distance between the closest points of the two circles?"
},
{
"role": "assistant",
"content": "To find the distance between the closest points of the two circles with centers... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How many common points can at least two lines have in a set of 3 plan lines?"
},
{
"role": "assistant",
"content": "To determine the maximum number of common points where at least two lines intersect in a set of three plane lines, we need to consider the possible co... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Let $a,$ $b,$ $c$ be non-zero real numbers such that $a + b + c = 0.$ Find all possible values of\n\\[\\frac{a^3 + b^3 + c^3}{abc}.\\]Enter all the possible values, separated by commas."
},
{
"role": "assistant",
"content": "To solve the problem of finding all poss... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Find the number of ordered triples of sets $(A, B, C)$ such that $A \\cup B \\cup C = \\{ 1, 2, \\cdots, 2003 \\}$ and $A \\cap B \\cap C = \\varnothing$."
},
{
"role": "assistant",
"content": "To find the number of ordered triples of sets \\((A, B, C)\\) such that ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Evaluate $\\lim_{x\\rightarrow 7}\\sqrt{x-10}$."
},
{
"role": "assistant",
"content": "To evaluate the limit \\(\\lim_{x \\to 7} \\sqrt{x - 10}\\), we need to consider the domain of the function \\(\\sqrt{x - 10}\\). The square root function \\(\\sqrt{y}\\) is defin... | You are a helpful assistant. |
[
{
"role": "user",
"content": "What is the largest prime factor of $$(25!)^3 - (24!)^3$$?"
},
{
"role": "assistant",
"content": "To find the largest prime factor of \\((25!)^3 - (24!)^3\\), we start by factoring the expression.\n\nFirst, note that \\(25! = 25 \\times 24!\\). Therefore, we can rew... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How do you integrate $\\int \\frac{e^u}{u} \\, du$?"
},
{
"role": "assistant",
"content": "To solve the integral \\(\\int \\frac{e^u}{u} \\, du\\), we need to recognize that this integral cannot be expressed in terms of elementary functions. Instead, it is represent... | You are a helpful assistant. |
[
{
"role": "user",
"content": "A box contains 4032 answer scripts, exactly half of which have an odd number of marks. We randomly choose 2 scripts and follow these rules:\n- If both scripts have odd scores, we add one mark to one of them, put it back in the box, and keep the other script outside.\n- If both ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Determine all positive integers $n$ such that $\\binom{n}{0}, \\binom{n}{1}, \\dots, \\binom{n}{n}$ are all odd numbers."
},
{
"role": "assistant",
"content": "To determine all positive integers \\( n \\) such that the binomial coefficients \\(\\binom{n}{0}, \\binom... | You are a helpful assistant. |
[
{
"role": "user",
"content": "If \\( f(x) \\) has a period of \\( \\frac{1}{2} \\) and \\( g(x) \\) has a period of \\( \\frac{2}{5} \\), what is the period of \\( f(x) + g(x) \\)?"
},
{
"role": "assistant",
"content": "To find the period of the function \\( f(x) + g(x) \\), where \\( f(x) \\) h... | You are a helpful assistant. |
[
{
"role": "user",
"content": "There are 20 houses along the shore of a lake, each painted one of four colors at random. Starting from one of these houses, you walk around the lake and laugh each time you pass a house that is the same color as the previous house you passed. What is the expected number of tim... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Let \\( n, r \\in \\mathbb{N} \\) such that \\( r \\leq n \\). Find the value of \\[ C(n-1,0) + C(n,1) + C(n+1,2) + \\cdots + C(n+r-1,r) \\] where \\( C(n,r) = \\frac{n!}{(n-r)!r!} \\)."
},
{
"role": "assistant",
"content": "To find the value of the sum \\( C(n-1,0)... | You are a helpful assistant. |
[
{
"role": "user",
"content": "The line $y = \\frac{3}{2} x - 25$ is parameterized by $(x,y) = (f(t),15t - 7).$ Enter the function $f(t).$"
},
{
"role": "assistant",
"content": "To find the function \\( f(t) \\) that parameterizes the x-coordinate such that the parametric equations \\((x, y) = (... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Given the demand function for boneless chicken breast \\( q = -0.5p + 6 \\), where \\( p \\) is the price per pound and \\( q \\) is the average number of pounds purchased per week per customer, determine the price at which the demand is unit elastic."
},
{
"role": "ass... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Let \\( A \\) be a set of \\( kn \\) elements where \\( k \\) and \\( n \\) are natural numbers. A \"k\" grouping of \\( A \\) is a partition of \\( A \\) into subsets, each containing \\( k \\) elements. Find the number of different \"k\" groupings of \\( A \\)."
},
{
... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Compute $\\cos 210^\\circ$."
},
{
"role": "assistant",
"content": "To compute \\(\\cos 210^\\circ\\), we follow these steps:\n\n1. **Determine the Quadrant**: The angle \\(210^\\circ\\) is in the third quadrant because it is between \\(180^\\circ\\) and \\(270^\\cir... | You are a helpful assistant. |
[
{
"role": "user",
"content": "(ii) Given a set $A = \\{a_1, a_2, a_3, \\ldots, a_n\\}$, find the total number of binary operations on $A$ such that $a_i * a_j \\neq a_i * a_k$ if $j \\neq k$."
},
{
"role": "assistant",
"content": "To find the total number of binary operations on a set \\( A = \\... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Integrate \\(\\frac{\\sin x}{x}\\) with respect to \\(x\\)."
},
{
"role": "assistant",
"content": "The integral of \\(\\frac{\\sin x}{x}\\) with respect to \\(x\\) cannot be expressed in terms of elementary functions. Instead, it is represented by a special function... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Let $K$ be a compact convex set with non-zero interior in $\\mathbb{R}^n$. Let $E_1$ and $E_2$ be the ellipsoids of minimal and maximal volume that contain and are contained in $K$, respectively. What is the best upper bound for the ratio of their volumes?"
},
{
"role":... | You are a helpful assistant. |
[
{
"role": "user",
"content": "What is the least positive integer that is divisible by three distinct primes?"
},
{
"role": "assistant",
"content": "To find the least positive integer that is divisible by three distinct primes, we start by identifying the three smallest prime numbers. These are 2... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Forest Ho-Chen notices that the stars on the US flag are arranged as a $6$ by $5$ rectangle with a $5$ by $4$ rectangle on the inside, allowing for beautiful cross patterns. He wonders what the previous number of states the US could have had where the stars could be arranged in... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Let \\[f(x) =\n\\begin{cases}\n9x+4 &\\text{if }x\\text{ is an integer}, \\\\\n\\lfloor{x}\\rfloor+5 &\\text{if }x\\text{ is not an integer}.\n\\end{cases}\n\\]Find $f(\\sqrt{29})$."
},
{
"role": "assistant",
"content": "To find \\( f(\\sqrt{29}) \\), we first deter... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Given the equation \\(x^2 + y^2 + z^2 = 1\\), find the maximum value of \\(x + 2y + 3z\\)."
},
{
"role": "assistant",
"content": "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!... | You are a helpful assistant. |
[
{
"role": "user",
"content": "An entity A has a probability of 3/8 to disappear and a probability of 5/8 to produce two new entities A. What is the probability that A produces an infinite descent of entities?\n\nExplanation: The problem statement is extracted directly from the forum post and rephrased for c... | You are a helpful assistant. |
[
{
"role": "user",
"content": "A natural number \\( N \\) has exactly two divisors, and \\( N+1 \\) has exactly three divisors. Find the number of divisors of \\( N+2 \\)."
},
{
"role": "assistant",
"content": "To solve the problem, we need to find a natural number \\( N \\) such that \\( N \\) h... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How do you evaluate the integral $\\int \\frac{1}{1-x} dx$ and show that it equals $-\\ln(1-x)$?"
},
{
"role": "assistant",
"content": "To evaluate the integral \\(\\int \\frac{1}{1 - x} \\, dx\\), we use the substitution method. Let \\(u = 1 - x\\). Then, the diffe... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How many additive abelian groups of order 16 have the property that $x + x + x + x = 0$?"
},
{
"role": "assistant",
"content": "To determine how many additive abelian groups of order 16 satisfy the condition that \\(x + x + x + x = 0\\) for all elements \\(x\\), we ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "In how many ways can 4 nuts be placed in a $4 \\times 4$ table such that there is at least one nut in every row and every column?"
},
{
"role": "assistant",
"content": "To solve the problem of placing 4 nuts in a \\(4 \\times 4\\) table such that there is at least o... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How many arrangements of all eleven letters of the word M I S S I S S I P P I are there in which all the four letters I are consecutive?"
},
{
"role": "assistant",
"content": "To determine the number of arrangements of the letters in \"MISSISSIPPI\" where all four I... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Given the linear transformation \\( f: \\mathbb{R} \\rightarrow \\mathbb{R}^2 \\) defined by \\( f(u) = v \\), where \\( u = \\begin{pmatrix} x \\\\ y \\end{pmatrix} \\) and \\( v = \\begin{pmatrix} x + y \\\\ x - y \\end{pmatrix} \\), if the points \\( P', Q', R' \\) are the i... | You are a helpful assistant. |
[
{
"role": "user",
"content": "A standard deck of cards is shuffled and 3 cards are selected. What is the probability that the 3rd card is either a black face card or a queen, if the queen of hearts and queen of spades are the first two cards selected?"
},
{
"role": "assistant",
"content": "To so... | You are a helpful assistant. |
[
{
"role": "user",
"content": "A gambler plays a game \\( n \\) times, with the probability of winning each game being \\( p \\). If it is known that the gambler did not win \\( x \\) times, what is the expected number of times the gambler won?"
},
{
"role": "assistant",
"content": "To find the e... | You are a helpful assistant. |
[
{
"role": "user",
"content": "The five-digit number $246\\underline{\\hspace{5pt}}8$ is divisible by 9. What is the missing digit?"
},
{
"role": "assistant",
"content": "To determine the missing digit in the five-digit number \\(246\\underline{\\hspace{5pt}}8\\) that makes it divisible by 9, we ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Given the equation \\(3x^2 - 25x + 66 = 0\\) with solutions \\(x = 4\\) and \\(x = 9\\), determine the base of the number system used on the planet Pandora, assuming the symbols for digits in Pandora's system and the decimal system have the same value."
},
{
"role": "as... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Given the function \\( f(a, b, c) = \\frac{a}{b+c+1} + \\frac{b}{c+a+1} + \\frac{c}{a+b+1} + (1-a)(1-b)(1-c) \\), compute the first partial derivative \\(\\frac{\\partial f}{\\partial a}\\)."
},
{
"role": "assistant",
"content": "To find the first partial derivative... | You are a helpful assistant. |
[
{
"role": "user",
"content": "The median of the set $\\{n, n + 5, n + 6, n + 9, n + 15\\}$ is 9. What is the mean?"
},
{
"role": "assistant",
"content": "To find the mean of the set \\(\\{n, n + 5, n + 6, n + 9, n + 15\\}\\) given that the median is 9, we proceed as follows:\n\n1. **Identify the... | You are a helpful assistant. |
[
{
"role": "user",
"content": "In a single-elimination tournament, each game is between two players. Only the winner of each game advances to the next round. In a particular such tournament there are 256 players. How many individual games must be played to determine the champion?"
},
{
"role": "assis... | You are a helpful assistant. |
[
{
"role": "user",
"content": "What is the minimum number of distinct Set cards such that a set is guaranteed?"
},
{
"role": "assistant",
"content": "To determine the minimum number of distinct Set cards required to guarantee a set, we need to understand the structure of the game and the concept ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "While shopping at the local mall, Ann walked slowly (at a constant speed) down a descending escalator, taking 10 steps to reach the last step. She then ran up the same (descending) escalator with a speed five times greater than the speed with which she had walked down, taking 2... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Let $f(x) = 4x + c$ and $g(x) = cx + 2.$ If $f(g(x)) = 12x + d,$ then find $d.$"
},
{
"role": "assistant",
"content": "To find the value of \\( d \\), we start by composing the functions \\( f(x) = 4x + c \\) and \\( g(x) = cx + 2 \\). Substituting \\( g(x) \\) int... | You are a helpful assistant. |
[
{
"role": "user",
"content": "A giant, circular and perfectly flat pizza must be shared by 22 people. What is the least number of cuts to be made on the pizza so that each person can have a piece of pizza? (The pieces are not necessarily the same shape or with the same area.)"
},
{
"role": "assistan... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Compute $\\sin 270^\\circ$."
},
{
"role": "assistant",
"content": "To compute \\(\\sin 270^\\circ\\), we use the unit circle, which is a circle with a radius of 1 centered at the origin of the coordinate system. The angle \\(270^\\circ\\) is measured counterclockwis... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Suppose $ABCD$ is a quadrilateral circumscribing a circle with center at $O$. If the areas of the triangles $OAB$ and $OCD$ are $12$ cm$^2$ and $17$ cm$^2$, respectively, what is the area of the quadrilateral $ABCD$?"
},
{
"role": "assistant",
"content": "Given a qu... | You are a helpful assistant. |
[
{
"role": "user",
"content": "From a 50-foot-tall lookout tower, a park ranger sees a fire at an angle of depression of 1.6°. How far is the fire from the tower?"
},
{
"role": "assistant",
"content": "To solve the problem, we need to determine the distance from the 50-foot-tall lookout tower to ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How many ways can you choose a pair of cards from a set of 2 cards?"
},
{
"role": "assistant",
"content": "To determine the number of ways to choose a pair of cards from a set of 2 cards, we use the combination formula \\( C(n, k) = \\frac{n!}{k!(n - k)!} \\), where... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Solve \\[\\frac{3x^2+2x+1}{x-1}=3x+1\\]for $x$."
},
{
"role": "assistant",
"content": "To solve the equation \\(\\frac{3x^2 + 2x + 1}{x - 1} = 3x + 1\\) for \\(x\\), follow these steps:\n\n1. **Eliminate the denominator by multiplying both sides by \\(x - 1\\):**\n... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Determine the type of graph represented by the equation $x^2 = (2y + 3)^2$. Is it a hyperbola or intersecting lines?"
},
{
"role": "assistant",
"content": "To determine the type of graph represented by the equation \\(x^2 = (2y + 3)^2\\), we start by rewriting it in... | You are a helpful assistant. |
[
{
"role": "user",
"content": "In a business school, 75% of students adopted marketing, 62% adopted finance, and 88% adopted HR as electives. What is the minimum number of students specializing in all three subjects?"
},
{
"role": "assistant",
"content": "To determine the minimum number of studen... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Form the integer 24 using the numbers 2, 4, 5, 7. Only addition, subtraction, division, and multiplication can be used. Each number can only be used once."
},
{
"role": "assistant",
"content": "To form the integer 24 using the numbers 2, 4, 5, and 7 with the operati... | You are a helpful assistant. |
[
{
"role": "user",
"content": "How many different AoPS avatars are possible using 3 colors to color the differently oriented rhombuses, given that there are 3 different orientations possible?"
},
{
"role": "assistant",
"content": "To determine the number of different AoPS avatars possible using 3... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Find the possible values of $\\sec \\beta$ given that $2 \\tan^2 \\beta = 3 + 9 \\sec \\beta$."
},
{
"role": "assistant",
"content": "To find the possible values of \\(\\sec \\beta\\) given the equation \\(2 \\tan^2 \\beta = 3 + 9 \\sec \\beta\\), we start by using ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Determine the points of continuity of the function \\( f(x) = \\lfloor x \\rfloor \\) for \\( x \\in \\mathbb{R} \\), where \\( \\lfloor x \\rfloor \\) denotes the greatest integer function."
},
{
"role": "assistant",
"content": "To determine the points of continuit... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Two fair dice were rolled and the sum of the obtained numbers was even. What is the probability that both numbers were equal?"
},
{
"role": "assistant",
"content": "To solve the problem of finding the probability that both numbers on two fair dice are equal given th... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Find all solutions in $\\mathbb{R}$ of the equation \\[(x^2 - x + 1)(4y^2 + 6y + 4)(4z^2 - 12z + 25) = 21.\\]"
},
{
"role": "assistant",
"content": "To find all real solutions of the equation \\((x^2 - x + 1)(4y^2 + 6y + 4)(4z^2 - 12z + 25) = 21\\), we need to deter... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Evaluate the integral \\(\\int e^{1/z} \\, dz\\) along the boundary of the rectangle centered at \\(1 + 2i\\) with width 5 and height 6. The boundary is divided into four contours."
},
{
"role": "assistant",
"content": "To evaluate the integral \\(\\int e^{1/z} \\, ... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Let \\( S \\) be the set of permutations of \\( n \\geq 100 \\) objects. Consider the experiment of choosing an element of \\( S \\) randomly with equal probabilities. Let \\( f \\) be the random variable defined by \\( f(\\sigma) = |\\{j : \\sigma(j) = j\\}| \\), so \\( f(\\si... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Solve the inequality: $\\max(\\log_{3}{x}, \\log_{\\frac{1}{2}}{x}) \\leq 3$."
},
{
"role": "assistant",
"content": "To solve the inequality \\(\\max(\\log_{3}{x}, \\log_{\\frac{1}{2}}{x}) \\leq 3\\), we need to ensure that both \\(\\log_{3}{x} \\leq 3\\) and \\(\\l... | You are a helpful assistant. |
[
{
"role": "user",
"content": "No two students in Mrs. Vale's 26-student mathematics class have the same two initials. Each student's first name and last name begin with the same letter. If the letter ``Y'' is considered a vowel, what is the probability of randomly picking a student whose initials are vowels... | You are a helpful assistant. |
[
{
"role": "user",
"content": "Find the points where the function \\( G(u) = \\frac{u+1}{u^2 - u - 6} \\) is not defined and determine whether each discontinuity is removable."
},
{
"role": "assistant",
"content": "To determine where the function \\( G(u) = \\frac{u+1}{u^2 - u - 6} \\) is not def... | You are a helpful assistant. |
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