List questions from recreational-mathematics

Published on 25 Mar 2026 - 17:40

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How many slices of pizza do we have?

Published on 26 Mar 2026 - 12:36

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1-concatenable primes

Published on 22 Aug 2018 - 13:15

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Finding a future year in a cycle of years

Published on 22 Aug 2018 - 18:56

412

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alternate deletion of integers between 1 and 128, which is the last one?

Published on 23 Aug 2018 - 16:17

204

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Simple disproof of Danzer — Grünbaum conjecture

Published on 25 Mar 2026 - 4:37

148

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Reversing the digits of $2^n$ to yield a prime power

Published on 25 Aug 2018 - 18:10

559

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Quadratic inequality puzzle: Prove$ |cx^2 + bx + a| ≤ 2$ given $|ax^2+bx+c| ≤ 1$

Published on 25 Mar 2026 - 17:22

79

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Probability that a team that loses in a best of series is the better team

Published on 25 Mar 2026 - 19:10

105

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What use is group theory to understand and solve Rubik’s cubes?

Published on 25 Mar 2026 - 6:05

51

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How can I formalize this trasport problem?

Published on 25 Mar 2026 - 20:52

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Triangles defined on an infinite Go board by same-colored stones

Published on 25 Mar 2026 - 7:49

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Expected number of students that don't have someone cheating from them.

Published on 25 Mar 2026 - 1:17

82

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Robots on the moon problem

Published on 31 Aug 2018 - 8:41

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What is the relationship between 1/7, 1/11, 1/13, and the number 1001?

Published on 01 Sep 2018 - 2:34

List Question

How to mathematically/logically prove that everything in our "real" world is finite?

How many slices of pizza do we have?

1-concatenable primes

Finding a future year in a cycle of years

alternate deletion of integers between 1 and 128, which is the last one?

Simple disproof of Danzer — Grünbaum conjecture

Reversing the digits of $2^n$ to yield a prime power

Quadratic inequality puzzle: Prove$ |cx^2 + bx + a| ≤ 2$ given $|ax^2+bx+c| ≤ 1$

Probability that a team that loses in a best of series is the better team

What use is group theory to understand and solve Rubik’s cubes?

How can I formalize this trasport problem?

Triangles defined on an infinite Go board by same-colored stones

Expected number of students that don't have someone cheating from them.

Robots on the moon problem

What is the relationship between 1/7, 1/11, 1/13, and the number 1001?

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