List questions from recreational-mathematics

137

Views

Which $N$ are multiples of $2020$ with all distinct digits where swapping any two of them makes $N$ not a multiple of $2020$?

Published on 24 Apr 2026 - 15:56

147

Views

Unique questions about pentagon

Published on 09 Apr 2026 - 3:22

294

Views

The Board Football Problem (Part I)

Published on 11 Apr 2026 - 1:38

55

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Forming circuit with straight moves

Published on 09 Apr 2026 - 4:49

65

Views

Time and Work : Alternating Workers

Published on 16 Apr 2026 - 11:59

61

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A mathematical expression that gives 0 if variable is different from constant and 1 if variable same as constant

Published on 12 Apr 2026 - 2:42

334

Views

Proof of the Existence of Integer Solutions for $(f_1)^2 + (f_2)^2 +( f_3)^2... = I^2$

Published on 15 Apr 2026 - 23:17

58

Views

Find a function that satisfies the following property

Published on 14 Apr 2026 - 18:49

240

Views

Why does a Reuleaux triangle appear when drilling a hole with a knife

Published on 17 Apr 2026 - 15:29

202

Views

Two player game with marbles using optimal strategies

Published on 09 Apr 2026 - 8:11

1.1k

Views

Three digit number even and greater than $500$

Published on 15 Apr 2026 - 23:27

340

Views

Number of pieces produced by cutting a folded ribbon

Published on 16 Apr 2026 - 6:48

152

Views

Freeing the trapped knight

Published on 11 Apr 2026 - 7:37

779

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Is there an equation for the number of iterations required to escape the Mandelbrot Set's bounding circle?

Published on 14 Apr 2026 - 0:36

110

Views

Is there a closed form to this series?

Published on 13 Apr 2026 - 10:41

List Question

Which $N$ are multiples of $2020$ with all distinct digits where swapping any two of them makes $N$ not a multiple of $2020$?

Unique questions about pentagon

The Board Football Problem (Part I)

Forming circuit with straight moves

Time and Work : Alternating Workers

A mathematical expression that gives 0 if variable is different from constant and 1 if variable same as constant

Proof of the Existence of Integer Solutions for $(f_1)^2 + (f_2)^2 +( f_3)^2... = I^2$

Find a function that satisfies the following property

Why does a Reuleaux triangle appear when drilling a hole with a knife

Two player game with marbles using optimal strategies

Three digit number even and greater than $500$

Number of pieces produced by cutting a folded ribbon

Freeing the trapped knight

Is there an equation for the number of iterations required to escape the Mandelbrot Set's bounding circle?

Is there a closed form to this series?

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