List questions from recreational-mathematics

Published on 13 Apr 2026 - 0:39

303

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IOQM/INMO- TRIANGLE GEOMETRY

Published on 14 Apr 2026 - 13:40

94

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Question regarding numbers on chessboard

Published on 12 Apr 2026 - 19:02

613

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Geometry problem - IOQM

Published on 10 Apr 2026 - 16:37

328

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Alphabetical arrangement of 5 letters - MUSIC

Published on 22 Apr 2026 - 2:10

257

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Can continued fraction of $\pi$ tile the plane?

Published on 13 Apr 2026 - 2:26

154

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Using dominoes to cover a chessboard

Published on 17 Apr 2026 - 2:09

51

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Leaning cards problem I came up with and can’t solve!

Published on 15 Apr 2026 - 12:38

505

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When a two digit number is divided by the number formed by exchanging the two digits, the quotient is equal to its remainder.

Published on 16 Apr 2026 - 12:27

48

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Do "square-rootable" sequences of integers have square-rootable suffixes?

Published on 23 Apr 2026 - 16:12

1k

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What's the minimum number of $2$s needed to write a positive integer?

Published on 13 Apr 2026 - 6:40

237

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Probability books with some "fun", recreational applications

Published on 12 Apr 2026 - 3:51

153

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10 similar quadrilaterals with 8 points.

Published on 17 Apr 2026 - 11:02

55

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Explain the following mysterious property of the function $f_1$ where $f_1(k)$ is the square of sum of digits of $k$.

Published on 16 Apr 2026 - 12:56

540

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Combinatorics question - why am I over counting?

Published on 22 Apr 2026 - 10:39

List Question

Coloring of small chessboards on the torus

IOQM/INMO- TRIANGLE GEOMETRY

Question regarding numbers on chessboard

Geometry problem - IOQM

Alphabetical arrangement of 5 letters - MUSIC

Can continued fraction of $\pi$ tile the plane?

Using dominoes to cover a chessboard

Leaning cards problem I came up with and can’t solve!

When a two digit number is divided by the number formed by exchanging the two digits, the quotient is equal to its remainder.

Do "square-rootable" sequences of integers have square-rootable suffixes?

What's the minimum number of $2$s needed to write a positive integer?

Probability books with some "fun", recreational applications

10 similar quadrilaterals with 8 points.

Explain the following mysterious property of the function $f_1$ where $f_1(k)$ is the square of sum of digits of $k$.

Combinatorics question - why am I over counting?

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