List questions from recreational-mathematics

Published on 30 Mar 2026 - 0:21

334

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Configurations for jenga

Published on 11 Apr 2026 - 19:44

1.1k

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Can a {p,q}-powered knight return to the origin?

Published on 26 Mar 2026 - 4:30

462

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Problem regarding coloring balls drawn from a bin

Published on 11 Apr 2026 - 22:22

185

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How can I make huge numbers with only tiny numbers? I have to make 55 with 1,1,1,2,2

Published on 17 Oct 2023 - 8:12

77

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positive integers $n$ such that $\frac{(n^2-1)!}{(n!)^n}$ is an integer

Published on 17 Oct 2023 - 18:12

142

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What are the chances that the Enemy/Defender game has a stable solution?

Published on 10 Apr 2026 - 20:54

132

Views

Odd-sounding "everyday" applications of the Handshaking Lemma

Published on 29 Mar 2026 - 6:08

16

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Given a variable point with a boundary restriction how can i find the line that matches the point boundary?

Published on 09 Mar 2026 - 20:00

100

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Examples of functions which are bell-shaped?

Published on 11 Apr 2026 - 12:55

187

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Can you cover $\mathbb R$ with countably many smol sets?

Published on 20 Oct 2023 - 0:49

364

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25 Horses, How many races to figure out the top 5 fastest? (No clock, 5 horses at a time on the track)

Published on 20 Oct 2023 - 19:31

1.2k

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$n$ points in the plane can be connected with $n-1$ clockwise, non-intersecting line segments from any starting point

Published on 26 Mar 2026 - 20:40

26

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Building $\mathbb R^2$ as a countable union of bi-partitions products.

Published on 09 Apr 2026 - 13:14

232

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Approximating for the Error function $\text{erf}(x)$ through an Hyperbolic tangent function $\text{tanh}\left(\dfrac{4x}{4-x^2}\right)$

Published on 27 Mar 2026 - 18:00

List Question

Number of spanning trees of a special graph

Configurations for jenga

Can a {p,q}-powered knight return to the origin?

Problem regarding coloring balls drawn from a bin

How can I make huge numbers with only tiny numbers? I have to make 55 with 1,1,1,2,2

positive integers $n$ such that $\frac{(n^2-1)!}{(n!)^n}$ is an integer

What are the chances that the Enemy/Defender game has a stable solution?

Odd-sounding "everyday" applications of the Handshaking Lemma

Given a variable point with a boundary restriction how can i find the line that matches the point boundary?

Examples of functions which are bell-shaped?

Can you cover $\mathbb R$ with countably many smol sets?

25 Horses, How many races to figure out the top 5 fastest? (No clock, 5 horses at a time on the track)

$n$ points in the plane can be connected with $n-1$ clockwise, non-intersecting line segments from any starting point

Building $\mathbb R^2$ as a countable union of bi-partitions products.

Approximating for the Error function $\text{erf}(x)$ through an Hyperbolic tangent function $\text{tanh}\left(\dfrac{4x}{4-x^2}\right)$

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