List questions from recreational-mathematics

Published on 16 Mar 2019 - 20:44

82

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Universal set proof [discrete mathematics]

Published on 16 Mar 2019 - 21:48

174

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A faulty clock runs backwards and slow, covering $55$ minutes in a hour. ...

Published on 17 Mar 2019 - 17:01

102

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Odds of winning a prize in a weighted, random raffle

Published on 17 Mar 2019 - 17:59

78

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Restoring permutation from differences of adjacent elements

Published on 25 Mar 2026 - 10:59

498

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Determine the form of the sequence {9,144,3600,129600,6350400,...}

Published on 19 Mar 2019 - 20:18

871

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Overlapping circles covering polygon

Published on 20 Mar 2019 - 16:31

101

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How to show this rule works for whole numbers to the fifth power?

Published on 26 Mar 2026 - 19:01

591

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Number of different fault-free $2 \times 1$ domino tilings on a $5 \times 6$ rectangle

Published on 25 Mar 2026 - 22:05

218

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Is there a solution to the functional equation $f(x)=2\log(x)^2f\left(x^\frac{3}{8}\right)^2f\left(x^\frac{1}{4}\right)^2$?

Published on 27 Mar 2026 - 1:47

168

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Theorems & Proof Corrections [discrete mathematics]

Published on 21 Mar 2019 - 18:33

1.6k

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Is there a bijective, monotonically increasing, strictly concave function from the reals, to the reals?

Published on 22 Mar 2019 - 17:52

780

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How many times can I cut a shape in half before getting a new shape?

Published on 23 Mar 2019 - 15:32

128

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chessboard 7x 7

Published on 26 Mar 2026 - 12:32

99

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How to calculate the maximum height

Published on 25 Mar 2019 - 18:26

List Question

Big-$O$ verification [discrete mathematics]

Universal set proof [discrete mathematics]

A faulty clock runs backwards and slow, covering $55$ minutes in a hour. ...

Odds of winning a prize in a weighted, random raffle

Restoring permutation from differences of adjacent elements

Determine the form of the sequence {9,144,3600,129600,6350400,...}

Overlapping circles covering polygon

How to show this rule works for whole numbers to the fifth power?

Number of different fault-free $2 \times 1$ domino tilings on a $5 \times 6$ rectangle

Is there a solution to the functional equation $f(x)=2\log(x)^2f\left(x^\frac{3}{8}\right)^2f\left(x^\frac{1}{4}\right)^2$?

Theorems & Proof Corrections [discrete mathematics]

Is there a bijective, monotonically increasing, strictly concave function from the reals, to the reals?

How many times can I cut a shape in half before getting a new shape?

chessboard 7x 7

How to calculate the maximum height

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