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[ { "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": "A city has a system of bus routes with the following properties:\n- Each route has exactly 11 bus stops.\n- It is possible to travel between any two bus stops without changing routes.\n- Any two bus routes have exactly one bus stop in common.\nWhat is the number of bus routes i...
You are a helpful assistant.
[ { "role": "user", "content": "Sami remembers that the digits in her new three-digit area code contain a 9, 8, and 7, but she can't recall the order. How many possibilities are there for her to try?" }, { "role": "assistant", "content": "To determine the number of possible three-digit area codes ...
You are a helpful assistant.
[ { "role": "user", "content": "Two distinct numbers are selected simultaneously and at random from the set $\\{1, 2, 3, 4, 5\\}$. What is the probability that their product is an even number? Express your answer as a common fraction." }, { "role": "assistant", "content": "To find the probability ...
You are a helpful assistant.
[ { "role": "user", "content": "Find the sum of the series $1 + 10 + 100 + 1000 + 10000 + \\ldots$." }, { "role": "assistant", "content": "To find the sum of the series \\(1 + 10 + 100 + 1000 + 10000 + \\ldots\\), we first recognize that this is a geometric series. The first term \\(a\\) of the se...
You are a helpful assistant.
[ { "role": "user", "content": "Trickster Rabbit agrees to double Foolish Fox's money every time Fox crosses the bridge by Rabbit's house, but Fox must pay 40 coins in toll to Rabbit after each crossing. After crossing the bridge three times, Fox discovers that all his money is gone. How many coins did Fox ha...
You are a helpful assistant.
[ { "role": "user", "content": "How many vertical asymptotes does the function \\( f(x) = \\frac{x^2 - 6x - 16}{x^3 - 5x^2 - 2x + 24} \\) have?" }, { "role": "assistant", "content": "To determine the number of vertical asymptotes of the function \\( f(x) = \\frac{x^2 - 6x - 16}{x^3 - 5x^2 - 2x + 2...
You are a helpful assistant.
[ { "role": "user", "content": "In base \\( b \\), how many integers with \\( (2n+1) \\) digits are palindromes?" }, { "role": "assistant", "content": "To determine the number of \\((2n+1)\\)-digit palindromes in base \\( b \\), we need to consider the structure of a palindrome. A \\((2n+1)\\)-dig...
You are a helpful assistant.
[ { "role": "user", "content": "In right triangle $ABC$, $AB=10$, $AC=6$ and $BC=8$ units. What is the distance from $C$ to the midpoint of segment $AB$?" }, { "role": "assistant", "content": "To find the distance from point \\(C\\) to the midpoint of segment \\(AB\\) in right triangle \\(ABC\\) ...
You are a helpful assistant.
[ { "role": "user", "content": "The product of a number $M$ and six less than $M$ is $-5$. What is the sum of all possible values of $M$?" }, { "role": "assistant", "content": "To solve the problem, we start by translating the given statement into an equation. The product of a number \\( M \\) and...
You are a helpful assistant.
[ { "role": "user", "content": "What is the value of $(2x + 5)^2$ when $x = 3$?" }, { "role": "assistant", "content": "To find the value of \\((2x + 5)^2\\) when \\(x = 3\\):\n\n1. Substitute \\(x = 3\\) into the expression:\n \\[\n (2 \\cdot 3 + 5)\n \\]\n\n2. Calculate the expression insid...
You are a helpful assistant.
[ { "role": "user", "content": "Find the range and domain of the function \\( f(x) = a \\sin x + b \\cos x \\)." }, { "role": "assistant", "content": "To find the domain and range of the function \\( f(x) = a \\sin x + b \\cos x \\), we proceed as follows:\n\n### Domain:\nThe function \\( f(x) = a...
You are a helpful assistant.
[ { "role": "user", "content": "Compute the limit of the sequence $\\{z_n\\}$ where $z_n = i^{n!}$." }, { "role": "assistant", "content": "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!...
You are a helpful assistant.
[ { "role": "user", "content": "At a birthday party, everyone who gets an invitation card can come alone or bring a friend. Everyone invited was present at the event. The ratio of the number of invitation cards to the number of guests attending is $3:5$. What is the ratio of the number of invitation cards to ...
You are a helpful assistant.
[ { "role": "user", "content": "Jordan and his three best friends are on a relay team. His relay team will run a race, where the first runner runs a lap, then the second, then the third, then the fourth.\n\nJordan is the fastest so he will run the fourth lap. How many different orders can the four team memb...
You are a helpful assistant.
[ { "role": "user", "content": "For a N-player symmetric game with S possible strategies, how many distinct strategy profiles are there?" }, { "role": "assistant", "content": "To determine the number of distinct strategy profiles in an \\( N \\)-player symmetric game with \\( S \\) possible strate...
You are a helpful assistant.
[ { "role": "user", "content": "Find the number of different partitions of a set with \\( n \\) elements into 2 classes, denoted as \\( {S_2}^n \\)." }, { "role": "assistant", "content": "To find the number of different partitions of a set with \\( n \\) elements into 2 classes, we need to determi...
You are a helpful assistant.
[ { "role": "user", "content": "How do you factor $x^n - 1$, where $n \\geq 3$, into irreducibles in $\\mathbb{Z}[x]$?" }, { "role": "assistant", "content": "To factor the polynomial \\( x^n - 1 \\) into irreducibles in \\( \\mathbb{Z}[x] \\) for \\( n \\geq 3 \\), we use the concept of cyclotomic...
You are a helpful assistant.
[ { "role": "user", "content": "Find a formula or rule for the sequence: $1, 2, 6, 30, 210, 2310, \\ldots$" }, { "role": "assistant", "content": "To find a formula or rule for the sequence \\(1, 2, 6, 30, 210, 2310, \\ldots\\), we observe the pattern in the sequence and derive the rule as follows:...
You are a helpful assistant.
[ { "role": "user", "content": "Express $2^{6}(2^{7}-1)$ as the sum of powers of 2." }, { "role": "assistant", "content": "To express \\(2^6(2^7 - 1)\\) as the sum of powers of 2, we start by simplifying the expression.\n\n1. **Expand the expression:**\n \\[\n 2^6(2^7 - 1) = 2^6 \\cdot 2^7 - 2...
You are a helpful assistant.
[ { "role": "user", "content": "Solve the equation \\( x \\cdot 2^x = 1 \\) algebraically." }, { "role": "assistant", "content": "To solve the equation \\( x \\cdot 2^x = 1 \\) algebraically, we start by rewriting the equation using the natural exponential function:\n\n\\[\nx \\cdot 2^x = 1\n\\]\n...
You are a helpful assistant.
[ { "role": "user", "content": "Given 5 towns, what is the minimum amount of road needed to connect each town to every other town?" }, { "role": "assistant", "content": "To solve the problem of finding the minimum number of roads required to connect 5 towns such that each town is connected to ever...
You are a helpful assistant.
[ { "role": "user", "content": "Find \\(\\lim_{x \\to \\infty} \\frac{\\sin(x)}{x}\\)." }, { "role": "assistant", "content": "To find the limit \\(\\lim_{x \\to \\infty} \\frac{\\sin(x)}{x}\\), we can use the Squeeze Theorem. The Squeeze Theorem states that if \\(f(x) \\leq g(x) \\leq h(x)\\) for ...
You are a helpful assistant.
[ { "role": "user", "content": "Characterize all graphs with $\\Delta(G) \\leq 2$." }, { "role": "assistant", "content": "To characterize all graphs with \\(\\Delta(G) \\leq 2\\), we need to understand the structure of such graphs. Recall that \\(\\Delta(G)\\) denotes the maximum degree of a graph...
You are a helpful assistant.
[ { "role": "user", "content": "If $c$ is the total cost (in million rupiah) for producing $q$ units of a product, then the average cost per unit is given by\n\\[\\overline{c} = \\frac{5000 + 6q}{q}.\\]\na. If producers continuously increase their production, what is the limit value of this average cost?\nb. ...
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[ { "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 \\( f(t) = t + \\ln(t) \\), find \\( \\frac{d(f^{-1})}{dt} \\) at \\( t = 1 + e \\). Provide exact values." }, { "role": "assistant", "content": "To find \\( \\frac{d(f^{-1})}{dt} \\) at \\( t = 1 + e \\) for the function \\( f(t) = t + \\ln(t) \\), we follow ...
You are a helpful assistant.
[ { "role": "user", "content": "Find the set of values of \\( x \\) for which \\( f(x) = |f(x)| \\) for the function \\( f(x) = 2 - (x+1)^{\\frac{1}{3}} \\)." }, { "role": "assistant", "content": "To find the set of values of \\( x \\) for which \\( f(x) = |f(x)| \\) for the function \\( f(x) = 2 ...
You are a helpful assistant.
[ { "role": "user", "content": "Determine the continuity and classify any discontinuities of the function \\( k(x) = \\lim_{n \\to \\infty} \\frac{1}{1 + |x|^n} \\)." }, { "role": "assistant", "content": "To determine the continuity and classify any discontinuities of the function \\( k(x) = \\lim...
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": "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": "A set of three numbers has both a mean and median equal to 4. If the smallest number in the set is 1, what is the range of the set of numbers?" }, { "role": "assistant", "content": "To solve the problem, we need to determine the range of a set of three numbers given...
You are a helpful assistant.
[ { "role": "user", "content": "Determine a generating function that encodes the number of ways to select $k$ beads from a drawer containing ten red beads, eight blue beads, and eleven green beads, with the condition that one must obtain an even number of red beads, an odd number of blue beads, and a prime nu...
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[ { "role": "user", "content": "Richard has 3 bananas, 4 apples, and 2 peaches in a basket. If he randomly chooses two pieces of fruit without replacement, what is the probability that he chooses two different kinds of fruit?" }, { "role": "assistant", "content": "To find the probability that Rich...
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": "Evaluate the integral $\\int_{0}^{t} sgn(x) \\ dx$, where $sgn(x) = -1$ for $x < 0$, $sgn(0) = 0$, and $sgn(x) = 1$ for $x > 0$." }, { "role": "assistant", "content": "To evaluate the integral \\(\\int_{0}^{t} \\text{sgn}(x) \\, dx\\), we need to consider the behavi...
You are a helpful assistant.
[ { "role": "user", "content": "Write a recursive formula for the following scenario: On October 1, 2002, Sal invested $24,000 in a bank account earning 3.4 percent interest annually, compounded monthly. A month later, he withdrew $100 and continued to withdraw $100 on the first of every month thereafter." ...
You are a helpful assistant.
[ { "role": "user", "content": "By purchasing rupees 50 shares for rupees 80 each, a man gets a 4% profit on his investment. What is his dividend if he buys 60 shares?" }, { "role": "assistant", "content": "To solve the problem, we need to determine the dividend for 60 shares given that the shares...
You are a helpful assistant.
[ { "role": "user", "content": "To calculate $31^2$, Emily mentally figures the value $30^2$ and adds 61. Emily subtracts a number from $30^2$ to calculate $29^2$. What number does she subtract?" }, { "role": "assistant", "content": "To solve the problem of finding the number Emily subtracts from ...
You are a helpful assistant.
[ { "role": "user", "content": "In how many ways can 8 people be seated in a row of chairs if three of the people, John, Wilma, and Paul, refuse to sit in three consecutive seats?" }, { "role": "assistant", "content": "To solve the problem of seating 8 people in a row such that John, Wilma, and Pa...
You are a helpful assistant.
[ { "role": "user", "content": "Evaluate the limit $\\lim_{x\\rightarrow 6} f(x)$ for the piecewise function:\n\\[ f(x) = \\begin{cases} \nx^2 - 4, & 0 < x < 6 \\\\ \n4, & x = 6 \\\\ \n8x + 2, & x > 6 \n\\end{cases} \\]" }, { "role": "assistant", "content": "To evaluate the limit \\(\\lim_{x \\to ...
You are a helpful assistant.
[ { "role": "user", "content": "How can you add eight 8's to get the number 1000?" }, { "role": "assistant", "content": "To solve the problem of adding eight 8's to get the number 1000, we need to creatively combine the digits into multi-digit numbers. Here is the clean and detailed solution:\n\n1...
You are a helpful assistant.
[ { "role": "user", "content": "Into a box are put ten smaller boxes. Each of these smaller boxes is either left empty or filled with ten still smaller empty boxes. Of all the boxes, exactly six have other boxes inserted into them. How many boxes remain empty?" }, { "role": "assistant", "content":...
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": "In how many ways can \\( n \\) people stand to form a ring?" }, { "role": "assistant", "content": "To determine the number of ways \\( n \\) people can stand to form a ring, we need to consider circular permutations. In a circular arrangement, rotations of the same ...
You are a helpful assistant.
[ { "role": "user", "content": "How many ordered triples of positive integers $(x, y, z)$ satisfy the equation $x^{2018} + y^{2018} = z^{2018}$?" }, { "role": "assistant", "content": "To determine the number of ordered triples of positive integers \\((x, y, z)\\) that satisfy the equation \\(x^{20...
You are a helpful assistant.
[ { "role": "user", "content": "What is the smallest digit that is never found in the units place of an even number?" }, { "role": "assistant", "content": "To determine the smallest digit that never appears in the units place of an even number, we first need to identify which digits can appear in ...
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": "What is the number of subsets with 20 elements of a set with 52 elements?" }, { "role": "assistant", "content": "To find the number of subsets with 20 elements from a set of 52 elements, we use the concept of combinations. The number of ways to choose 20 elements fr...
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": "On a table, there are 2016 coins. Two players take turns, and in each turn, a player can take 1, 2, or 3 coins. The player who takes the last coin wins. Which player has a winning strategy?" }, { "role": "assistant", "content": "To determine which player has a winni...
You are a helpful assistant.
[ { "role": "user", "content": "How many ways can 8 queens be arranged on an 8x8 chessboard so that no two queens can attack each other?" }, { "role": "assistant", "content": "To solve the problem of determining how many ways 8 queens can be arranged on an 8x8 chessboard so that no two queens can ...
You are a helpful assistant.
[ { "role": "user", "content": "If 25$\\%$ of a number is the same as 20$\\%$ of 30, what is the number?" }, { "role": "assistant", "content": "To solve the problem, we start by translating the given statement into an equation. The problem states that 25% of a number is the same as 20% of 30. Let ...
You are a helpful assistant.
[ { "role": "user", "content": "Let \\( K \\) be a commutative field. Find all prime ideals of the polynomial ring \\( K[X] \\)." }, { "role": "assistant", "content": "To find all prime ideals of the polynomial ring \\( K[X] \\) where \\( K \\) is a commutative field, we proceed as follows:\n\n1. ...
You are a helpful assistant.
[ { "role": "user", "content": "How many vertices will the simple graph G have if it contains 15 edges, 3 vertices of degree 4, and the other vertices of degree 3?" }, { "role": "assistant", "content": "To determine the number of vertices in the simple graph \\( G \\) with 15 edges, where 3 vertic...
You are a helpful assistant.
[ { "role": "user", "content": "What is the expected length of time until a head is tossed with a biased coin?" }, { "role": "assistant", "content": "To find the expected length of time until a head is tossed with a biased coin, we can use the properties of the geometric distribution. Let \\( p \\...
You are a helpful assistant.
[ { "role": "user", "content": "Determine the minimum number of cards needed to guarantee the existence of a set in the game of Set." }, { "role": "assistant", "content": "To determine the minimum number of cards needed to guarantee the existence of a set in the game of Set, we need to delve into ...
You are a helpful assistant.
[ { "role": "user", "content": "Suppose that $x^4$ is a prime number. Find all $a, b, c, d \\in \\mathbb{Q}$ such that $ax^3 + bx^2 + cx + d = 0$." }, { "role": "assistant", "content": "Given that \\( x^4 \\) is a prime number \\( p \\), we have \\( x^4 = p \\). This implies that \\( x \\) is a ro...
You are a helpful assistant.
[ { "role": "user", "content": "If the price of a stamp is 33 cents, what is the maximum number of stamps that could be purchased with $\\$32$?" }, { "role": "assistant", "content": "To determine the maximum number of stamps that can be purchased with $32 when each stamp costs 33 cents, follow th...
You are a helpful assistant.
[ { "role": "user", "content": "Yan is somewhere between his home and the stadium. To get to the stadium he can walk directly to the stadium, or else he can walk home and then ride his bicycle to the stadium. He rides 7 times as fast as he walks, and both choices require the same amount of time. What is the...
You are a helpful assistant.
[ { "role": "user", "content": "If $\\sqrt{5 + x} + \\sqrt{20 - x} = 7$, what is the value of $(5 + x)(20 - x)$?" }, { "role": "assistant", "content": "To solve the problem, we start with the given equation:\n\n\\[\n\\sqrt{5 + x} + \\sqrt{20 - x} = 7\n\\]\n\nLet \\( A = \\sqrt{5 + x} \\) and \\( B...
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": "Shauna takes five tests, each with a maximum of 100 points. Her scores on the first three tests are 76, 94, and 87. In order to average 81 for all five tests, what is the lowest score she can get on one of the other two tests?" }, { "role": "assistant", "content": "...
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[ { "role": "user", "content": "On Monday, John receives $100$ dollars from his father. Over the next week, everyday there is a $50\\%$ chance he will receive a gift of $10$ dollars from a magical Shamu. What is the probability that at the end of the week, John will have exactly $130$ dollars?" }, { "...
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[ { "role": "user", "content": "Let \\[f(x) =\n\\begin{cases}\n3x^2 + 2&\\text{if } x\\le 3, \\\\\nax - 1 &\\text{if } x>3.\n\\end{cases}\n\\]Find $a$ if the graph of $y=f(x)$ is continuous (which means the graph can be drawn without lifting your pencil from the paper)." }, { "role": "assistant", ...
You are a helpful assistant.
[ { "role": "user", "content": "How many different six-digit numbers can be formed using the digits 1, 2, 3, 4, 5, and 7?" }, { "role": "assistant", "content": "To determine how many different six-digit numbers can be formed using the digits 1, 2, 3, 4, 5, and 7, we follow these steps:\n\n1. **Ide...
You are a helpful assistant.
[ { "role": "user", "content": "The equation of the locus of points 5 units from the origin is?" }, { "role": "assistant", "content": "To find the equation of the locus of points that are 5 units from the origin, we start by recognizing that the set of all points at a fixed distance from a given p...
You are a helpful assistant.
[ { "role": "user", "content": "Is it possible for an infinite group \\( G \\) to have a subgroup \\( H \\neq G \\) which is of finite index in \\( G \\)? Provide an example." }, { "role": "assistant", "content": "Certainly! Here is the clean, final correct solution:\n\nTo determine if it is possi...
You are a helpful assistant.
[ { "role": "user", "content": "How many ways can Snow White redistribute the presents so that each of the \\( n \\) dwarves gets a different present than what they had before?" }, { "role": "assistant", "content": "To determine the number of ways Snow White can redistribute the presents such that...
You are a helpful assistant.
[ { "role": "user", "content": "Evaluate the expression $(\\omega+1)^{3n}$, where $\\omega$ is a cube root of unity." }, { "role": "assistant", "content": "To evaluate the expression \\((\\omega + 1)^{3n}\\) where \\(\\omega\\) is a cube root of unity, we start by using the properties of cube root...
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": "How many ways are there to color the vertices of a square with six colors if rotations are considered the same?" }, { "role": "assistant", "content": "To determine the number of distinct ways to color the vertices of a square using six colors, considering that rotat...
You are a helpful assistant.
[ { "role": "user", "content": "How many spheres are there that are tangent to all lines containing the edges of a triangular pyramid?" }, { "role": "assistant", "content": "To determine the number of spheres that are tangent to all lines containing the edges of a triangular pyramid (tetrahedron),...
You are a helpful assistant.
[ { "role": "user", "content": "A competition is attended by 20 participants. In each round, two participants compete. Each participant who loses twice is removed from the competition, and the last participant in the competition is the winner. If it is known that the winner of the competition has never lost, ...
You are a helpful assistant.
[ { "role": "user", "content": "What is the least nonzero positive integer that can be made by adding and subtracting the numbers 1027 and 1079?" }, { "role": "assistant", "content": "To find the least nonzero positive integer that can be formed by adding and subtracting the numbers 1027 and 1079,...
You are a helpful assistant.
[ { "role": "user", "content": "\"Counting\" is defined as listing positive integers, each one greater than the previous, up to (and including) an integer \\( n \\). In terms of \\( n \\), write the number of ways to count to \\( n \\)." }, { "role": "assistant", "content": "To determine the numbe...
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[ { "role": "user", "content": "In a press conference before the All-Star Game, eight All-Stars will be taking questions. Three are Cubs, three are Red Sox, and two are Yankees. If teammates insist on sitting together, how many ways can the eight All-Stars be seated in a row?" }, { "role": "assistant"...
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[ { "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": "At a women's doubles tennis tournament, there were three teams of two women. After the tournament, each woman shook hands once with each of the other players except her partner. What is the number of handshakes that occurred?" }, { "role": "assistant", "content": "...
You are a helpful assistant.
[ { "role": "user", "content": "Laura has 2010 lamps connected with 2010 buttons. Laura chooses the combinations of buttons to be pressed simultaneously and observes which lamps are lit. What is the minimum number of attempts she has to do until she is able to associate the buttons with the lamps in a correct...
You are a helpful assistant.
[ { "role": "user", "content": "Points A and B are on different sides of a line \\( l \\). The distance from point A to line \\( l \\) is 10 inches, and the distance from point B to line \\( l \\) is 4 inches. What is the distance between the midpoint O of segment AB and the line \\( l \\)?" }, { "rol...
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[ { "role": "user", "content": "Solve for $\\log(i)$ given the expression $Bz \\cdot \\log(i) - Bh \\cdot \\log(i)$ and the result $\\log(i) = \\frac{1}{Bz - Bh}$." }, { "role": "assistant", "content": "To solve for \\(\\log(i)\\) given the expression \\(Bz \\cdot \\log(i) - Bh \\cdot \\log(i)\\) ...
You are a helpful assistant.
[ { "role": "user", "content": "For \\( x, y, z, \\) and \\( w \\ge 0 \\), compute the smallest value of \\( x \\) satisfying the following system:\n\\[ y = x - 2001, \\]\n\\[ z = 2y - 2001, \\]\n\\[ w = 3z - 2001. \\]" }, { "role": "assistant", "content": "To find the smallest value of \\( x \\) ...
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": "If \\(a, b \\in \\mathbb{R}\\) and \\(\\{1, a+b, a\\} = \\{0, \\frac{b}{a}, b\\}\\), then find \\(b - a\\)." }, { "role": "assistant", "content": "Given that \\(a\\) and \\(b\\) are real numbers and the sets \\(\\{1, a+b, a\\}\\) and \\(\\{0, \\frac{b}{a}, b\\}\\) a...
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": "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": "If \\(a, b, c, d\\) are real numbers such that \\(a^2 + b^2 = c^2 + d^2 = 85\\) and \\(|ac - bd| = 40\\), find \\(|ad + bc|\\)." }, { "role": "assistant", "content": "To solve the problem, we start by noting that \\(a, b, c, d\\) are real numbers satisfying \\(a^2 +...
You are a helpful assistant.
[ { "role": "user", "content": "Find all positive integers \\( x \\) and \\( y \\) such that \\( x^2 = 3y^2 + 5 \\)." }, { "role": "assistant", "content": "To find all positive integers \\( x \\) and \\( y \\) such that \\( x^2 = 3y^2 + 5 \\), we will use modular arithmetic to show that no such so...
You are a helpful assistant.
[ { "role": "user", "content": "If \\(a\\) is real, what is the only real number that could be a multiple root of the equation \\(x^3 + ax + 1 = 0\\)?" }, { "role": "assistant", "content": "To determine the only real number that could be a multiple root of the equation \\(x^3 + ax + 1 = 0\\), we u...
You are a helpful assistant.
[ { "role": "user", "content": "How many variations of sundaes are there if a daily sundae consists of three scoops of ice cream chosen from four flavors: Vanilla, Pistachio, Black Walnut, and Strawberry?" }, { "role": "assistant", "content": "To determine the number of variations of sundaes with ...
You are a helpful assistant.
[ { "role": "user", "content": "Investigate the convergence or divergence of the series $\\sum_{k=1}^\\infty \\frac{\\sin \\frac{k\\pi}{2}}{k}$." }, { "role": "assistant", "content": "To determine the convergence or divergence of the series \\(\\sum_{k=1}^\\infty \\frac{\\sin \\frac{k\\pi}{2}}{k}\...
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": "A particular novel contains $40,\\!000$ words. If the author completed the novel in $80$ hours, on average how many words per hour did she write?" }, { "role": "assistant", "content": "To determine the average number of words per hour the author wrote, we need to di...
You are a helpful assistant.
[ { "role": "user", "content": "Compute $10^{-1}\\pmod{1001}$. Express your answer as a residue from $0$ to $1000$, inclusive." }, { "role": "assistant", "content": "To compute \\(10^{-1} \\pmod{1001}\\), we need to find an integer \\(x\\) such that \\(10x \\equiv 1 \\pmod{1001}\\). This means we ...
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": "Find the inverse of the equation \\( y = 0.5x - \\frac{3}{2} \\)." }, { "role": "assistant", "content": "To find the inverse of the function \\( y = 0.5x - \\frac{3}{2} \\), follow these steps:\n\n1. Start with the original function:\n \\[\n y = 0.5x - \\frac{3}...
You are a helpful assistant.
[ { "role": "user", "content": "What is the remainder when $x^{203} - 1$ is divided by $x^4 - 1$?" }, { "role": "assistant", "content": "To find the remainder when \\( x^{203} - 1 \\) is divided by \\( x^4 - 1 \\), we start by noting that \\( x^4 \\equiv 1 \\mod (x^4 - 1) \\). This equivalence all...
You are a helpful assistant.
[ { "role": "user", "content": "Caroline can make eleven lassis out of two mangoes. How many lassis can she make out of twelve mangoes?" }, { "role": "assistant", "content": "To determine how many lassis Caroline can make with 12 mangoes, given that she can make 11 lassis with 2 mangoes, we can se...
You are a helpful assistant.
[ { "role": "user", "content": "What is the product of the least common multiple and the greatest common factor of $20$ and $90$?" }, { "role": "assistant", "content": "To find the product of the least common multiple (LCM) and the greatest common factor (GCF) of 20 and 90, we can use the relation...
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