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128 | Given a rational number, write it as a fraction in lowest terms and calculate the product of the resulting numerator and denominator. For how many rational numbers between 0 and 1 will $20_{}^{}!$ be the resulting product? | math | qq8933/AIME_1983_2024 | {'ID': '1991-5', 'Year': 1991, 'Problem Number': 5, 'Part': None} | <think>
Alright, so I need to figure out how many rational numbers between 0 and 1 have a product of the numerator and denominator (when written in lowest terms) equal to 20 factorial. Let me start by understanding the problem.
First, a rational number between 0 and 1 can be written as a fraction \(\frac{a}{b}\) where... |
1. **Consider a countable subset \( S_0 \subseteq S \)**:
Let \( S_0 = \{x_1, x_2, \ldots\} \) be a countable subset of \( S \). Since \( S \) is a set of points in \( \mathcal{H} \) such that the distance between any two distinct points is \( d \), the same property holds for \( S_0 \).
2. **Find a point \( y \) f... | Let $ \mathcal{H}$ be an infinite-dimensional Hilbert space, let $ d>0$ , and suppose that $ S$ is a set of points (not necessarily countable) in $ \mathcal{H}$ such that the distance between any two distinct points in $ S$ is equal to $ d$ . Show that there is a point $ y\in\mathcal{H}$ such that
\[ \lef... | math | AI-MO/NuminaMath-CoT/aops_forum | {'source': 'aops_forum', 'messages': [{'content': 'Let $ \\mathcal{H}$ be an infinite-dimensional Hilbert space, let $ d>0$ , and suppose that $ S$ is a set of points (not necessarily countable) in $ \\mathcal{H}$ such that the distance between any two distinct points in $ S$ is equal to $ d$ . Show that ther... | <think>
Okay, so I need to show that there exists a point y in the Hilbert space H such that when I take each x in S, subtract y, scale by sqrt(2)/d, the resulting set is an orthonormal system. That means each vector has length 1 and any two distinct vectors are orthogonal.
First, let me recall that an orthonormal sys... |
109 | Find the remainder when $9 \times 99 \times 999 \times \cdots \times \underbrace{99\cdots9}_{\text{999 9's}}$ is divided by $1000$ . | math | qq8933/AIME_1983_2024 | {'ID': '2010-I-2', 'Year': 2010, 'Problem Number': 2, 'Part': 'I'} | <think>
Alright, so I have this problem here: I need to find the remainder when the product of numbers like 9, 99, 999, and so on, up to a number with 999 nines, is divided by 1000. Hmm, okay, let's unpack this step by step.
First, the problem is asking for the remainder of a very large product divided by 1000. When d... |
167.0 | Compute the mean molecular speed v in the heavy gas radon (Rn) in m/s | math | TIGER-Lab/TheoremQA/float | {'Answer_type': 'float', 'Picture': None} | <think>
Okay, I need to calculate the mean molecular speed of radon gas. Hmm, first, I remember there's a formula for the root mean square speed, which is related to temperature and molar mass. Wait, but the question specifically says "mean molecular speed"—is that the same as the root mean square speed, or is it a dif... |
1.3 | Two capacitors with capacitance values $C_{1}=2000 \pm 10 \mathrm{pF}$ and $C_{2}=3000 \pm 15 \mathrm{pF}$ are connected in series. The voltage applied across this combination is $V=5.00 \pm 0.02 \mathrm{~V}$. What is the percentage error in the calculation of the energy stored in this combination of capacitors? | math | daman1209arora/jeebench/phy | {'subject': 'phy', 'description': 'JEE Adv 2020 Paper 2', 'index': 15, 'type': 'Numeric'} | <think>
Okay, so I need to find the percentage error in the calculation of the energy stored in two capacitors connected in series. The capacitors have capacitance values C1 = 2000 ± 10 pF and C2 = 3000 ± 15 pF, and the voltage applied is V = 5.00 ± 0.02 V. Hmm, alright, let's start by recalling how to calculate the eq... |
181 | One base of a trapezoid is $100$ units longer than the other base. The segment that joins the midpoints of the legs divides the trapezoid into two regions whose areas are in the ratio $2: 3$ . Let $x$ be the length of the segment joining the legs of the trapezoid that is parallel to the bases and that divides the trape... | math | qq8933/AIME_1983_2024 | {'ID': '2000-II-6', 'Year': 2000, 'Problem Number': 6, 'Part': 'II'} | <think>
Okay, let's see. I need to solve this problem about a trapezoid with bases differing by 100 units. The segment connecting the midpoints of the legs divides the trapezoid into two regions with areas in the ratio 2:3. Then, we need to find x, which is the length of the segment that divides the trapezoid into two ... |
"1. **Defining the Sparse Set \\( S \\) and the Turing Machine \\( M \\)**\n\n We need to construc(...TRUNCATED) | "Let's say a language $L \\subseteq \\{0,1\\}^*$ is in $\\textbf{P}_{angel}$ if there exists a p(...TRUNCATED) | math | AI-MO/NuminaMath-CoT/aops_forum | "{'source': 'aops_forum', 'messages': [{'content': \"Let's say a language $L \\\\subseteq \\\\{0,1\(...TRUNCATED) | "<think>\nOkay, let me try to work through these problems one by one. They all seem related to spars(...TRUNCATED) |
"(a) Let the number of promoted participants be \\( P \\) and the number of repeaters be \\( R \\). (...TRUNCATED) | "In a mathematics test number of participants is $N < 40$ . The passmark is fixed at $65$ . The te(...TRUNCATED) | math | AI-MO/NuminaMath-CoT/aops_forum | "{'source': 'aops_forum', 'messages': [{'content': 'In a mathematics test number of participants is (...TRUNCATED) | "<think>\nAlright, so I'm trying to solve this math problem about participants in a test. Let me fir(...TRUNCATED) |
157 | "Kathy has $5$ red cards and $5$ green cards. She shuffles the $10$ cards and lays out $5$ of the ca(...TRUNCATED) | math | qq8933/AIME_1983_2024 | {'ID': '2018-I-3', 'Year': 2018, 'Problem Number': 3, 'Part': 'I'} | "<think>\nOkay, let's see. We need to find the probability that when Kathy lays out 5 cards from a s(...TRUNCATED) |
25 | "Square $AIME$ has sides of length $10$ units. Isosceles triangle $GEM$ has base $EM$ , and the are(...TRUNCATED) | math | qq8933/AIME_1983_2024 | {'ID': '2008-I-2', 'Year': 2008, 'Problem Number': 2, 'Part': 'I'} | "<think>\nOkay, so I need to solve this geometry problem where there's a square named AIME with side(...TRUNCATED) |
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