List questions from recreational-mathematics

Published on 22 Mar 2026 - 15:20

93

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Does Nim function for take-a-prime game is bounded?

Published on 24 Mar 2026 - 22:06

315

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Arranging $n$ different numbers on a circle such that difference of two adjacent ones is at most two

Published on 12 Feb 2018 - 14:50

542

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Calculating the diameter of planets when sun's diameter is scaled down to 50px

Published on 13 Feb 2018 - 15:22

1.4k

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What numbers can be created by $1-x^2$ and $x/2$?

Published on 22 Mar 2026 - 18:29

52

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A Basic Permutations Problem the order matters or doesn't confusion

Published on 14 Feb 2018 - 20:43

4.5k

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Why is $111111111 \times 111111111 = 12345678987654321$

Published on 16 Feb 2018 - 2:02

2.8k

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How to find a volume of this figure (which is $3080 \text{ cm}^3$) in a few seconds?

Published on 22 Mar 2026 - 20:51

102

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Find a perfect strategy algorithm for finding another person in a shop

Published on 20 Mar 2026 - 14:26

149

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Does my $\pi$ algorithm work?

Published on 22 Mar 2026 - 2:16

128

Views

Identity involving numbers 7, 16, 113, Pi, and Floor function

Published on 24 Mar 2026 - 23:44

50

Views

Does this figure align in some sort of well-known patterns?

Published on 17 Feb 2018 - 9:48

93

Views

Logical proof for simple statement,

Published on 25 Mar 2026 - 6:00

124

Views

Resizing a matrix

Published on 21 Mar 2026 - 17:55

701

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Generating a fixed number

Published on 21 Mar 2026 - 23:21

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Math Examples to get High-Schoolers Interested

Does Nim function for take-a-prime game is bounded?

Arranging $n$ different numbers on a circle such that difference of two adjacent ones is at most two

Calculating the diameter of planets when sun's diameter is scaled down to 50px

What numbers can be created by $1-x^2$ and $x/2$?

A Basic Permutations Problem the order matters or doesn't confusion

Why is $111111111 \times 111111111 = 12345678987654321$

How to find a volume of this figure (which is $3080 \text{ cm}^3$) in a few seconds?

Find a perfect strategy algorithm for finding another person in a shop

Does my $\pi$ algorithm work?

Identity involving numbers 7, 16, 113, Pi, and Floor function

Does this figure align in some sort of well-known patterns?

Logical proof for simple statement,

Resizing a matrix

Generating a fixed number

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