List questions from recreational-mathematics

Published on 01 Apr 2026 - 17:26

193

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Strategy to Solve a Number Guessing Problem from Belarus Open Math Olympiad 2012

Published on 11 Apr 2026 - 4:40

88

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Determining the circumdiameter of a triangle, given the distance from a vertex to the orthocenter and the length of the opposite side

Published on 06 Feb 2024 - 21:58

68

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Sum of diagonals of pentagon inscribed in circle

Published on 27 Mar 2026 - 23:15

86

Views

Why are there no identities for the golden ratio?

Published on 12 Apr 2026 - 7:00

60

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Poisson's distribution for probability

Published on 12 Apr 2026 - 5:10

130

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Is $357911$ the only perfect power that is obtained by concatenating $5$ or more consecutive odd numbers(in decimal)?

Published on 12 Apr 2026 - 3:20

1.1k

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Strange behaviour of $x^2+5x+7$ under iteration

Published on 11 Feb 2024 - 15:07

88

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Is there a base $b\geq11$ that we obtain a perfect power after we concatenate the first $n$ positive integers of that base?

Published on 26 Mar 2026 - 4:34

41

Views

Interesting Matrix Multiplication - Special Cases

Published on 14 Feb 2024 - 5:55

49

Views

Time Weighted Decay

Published on 11 Apr 2026 - 22:07

691

Views

Can we form a rectangle with integral lengths using an odd number of copies of this domino?

Published on 09 Apr 2026 - 8:36

20

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Trying to find a solution to a problem related to the recursive sequence $S_{n}^{k}(a)$

Published on 01 Apr 2026 - 17:12

26

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Given any equation, can we definitively determine in finite time whether or not this equation can be solved to give a symbolic answer?

Published on 20 Feb 2024 - 10:24

48

Views

Fitting / drawing a closed curve of a given length within given dimensions

Published on 31 Mar 2026 - 0:08

List Question

Ratios of lengths in a triangle

Strategy to Solve a Number Guessing Problem from Belarus Open Math Olympiad 2012

Determining the circumdiameter of a triangle, given the distance from a vertex to the orthocenter and the length of the opposite side

Sum of diagonals of pentagon inscribed in circle

Why are there no identities for the golden ratio?

Poisson's distribution for probability

Is $357911$ the only perfect power that is obtained by concatenating $5$ or more consecutive odd numbers(in decimal)?

Strange behaviour of $x^2+5x+7$ under iteration

Is there a base $b\geq11$ that we obtain a perfect power after we concatenate the first $n$ positive integers of that base?

Interesting Matrix Multiplication - Special Cases

Time Weighted Decay

Can we form a rectangle with integral lengths using an odd number of copies of this domino?

Trying to find a solution to a problem related to the recursive sequence $S_{n}^{k}(a)$

Given any equation, can we definitively determine in finite time whether or not this equation can be solved to give a symbolic answer?

Fitting / drawing a closed curve of a given length within given dimensions

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