List questions from recreational-mathematics

Published on 17 Apr 2026 - 1:16

498

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How to make a box which has the largest possible volume?

Published on 11 Apr 2026 - 3:42

333

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Recreational number theory problem

Published on 09 Apr 2026 - 22:50

1.3k

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What is the value of this repeated square root: $\sqrt{1\sqrt{2\sqrt {3 \sqrt{4\cdots}}}}$

Published on 15 Apr 2026 - 22:50

1.2k

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Prove that $n+1$ elements of a set will contain a co-prime pair

Published on 14 Apr 2026 - 10:55

2.7k

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Distribution of palindromic numbers

Published on 25 Mar 2026 - 17:24

992

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Lengths of increasing/decreasing subsequences of a finite sequence of real numbers

Published on 15 Apr 2026 - 6:43

2.2k

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palindromic squares of palindromes

Published on 25 Mar 2026 - 17:22

838

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Proving that $x$ is an integer, if the differences between any two of $x^{1919}$, $x^{1960}$, and $x^{2100}$ are integers

Published on 14 Apr 2026 - 16:35

346

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Gold Coins and a Balance

Published on 14 Apr 2026 - 10:12

493

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Does there exist a positive integer $n$ such that it will be twice of $n$ when its digits are reversed?

Published on 12 Apr 2026 - 10:27

1.3k

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Why does the strategy-stealing argument for tic-tac-toe work?

Published on 12 Apr 2026 - 7:01

270

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A game involving points in the integer plane - who wins?

Published on 14 Apr 2026 - 7:35

340

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Evaluation of a slow continued fraction

Published on 13 Apr 2026 - 9:00

32.7k

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Predicting Real Numbers

Published on 13 Apr 2026 - 15:47

List Question

Probability that a stick randomly broken in five places can form a tetrahedron

How to make a box which has the largest possible volume?

Recreational number theory problem

What is the value of this repeated square root: $\sqrt{1\sqrt{2\sqrt {3 \sqrt{4\cdots}}}}$

Prove that $n+1$ elements of a set will contain a co-prime pair

Distribution of palindromic numbers

Lengths of increasing/decreasing subsequences of a finite sequence of real numbers

palindromic squares of palindromes

Proving that $x$ is an integer, if the differences between any two of $x^{1919}$, $x^{1960}$, and $x^{2100}$ are integers

Gold Coins and a Balance

Does there exist a positive integer $n$ such that it will be twice of $n$ when its digits are reversed?

Why does the strategy-stealing argument for tic-tac-toe work?

A game involving points in the integer plane - who wins?

Evaluation of a slow continued fraction

Predicting Real Numbers

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