List questions from recreational-mathematics

Published on 02 Apr 2026 - 10:00

19.5k

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Using the digits $1-9$ each only once find the closest sum to $1000$.

Published on 11 Jan 2017 - 21:12

2.3k

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Probability of picking a uniquely colored ball successively without replacement

Published on 13 Jan 2017 - 19:27

319

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Logarithms rules using Taylor series?

Published on 15 Jan 2017 - 0:01

227

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Prove that there exists a multiple of $2016$, such that the multiple has only $4$ and $6$ as its digits.

Published on 30 Mar 2026 - 3:56

350

Views

How to calculate the number of states of a 7-segment LCD?

Published on 03 Apr 2026 - 2:17

1.5k

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Cutting out a circle using circles

Published on 16 Jan 2017 - 3:34

208

Views

Math curriculum high school/ undergrad things that are too formulated?

Published on 31 Mar 2026 - 9:23

471

Views

What are $x$, $y$ and $z$ if $\frac{x}{y + z} + \frac{y}{x + z} + \frac{z}{x + y} = 4$ and $x$, $y$ and $z$ are whole numbers?

Published on 04 Apr 2026 - 6:12

349

Views

Divide a square into rectangles where each occurs once in each orientation

Published on 26 Mar 2026 - 19:10

435

Views

Combinatorics and counting of subsets

Published on 19 Jan 2017 - 7:23

1k

Views

Spheres in cylinder and volume

Published on 19 Jan 2017 - 14:23

121

Views

Logic Sign Puzzles

Published on 06 Apr 2026 - 15:37

28

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How to figured out a % of an unknown

Published on 20 Jan 2017 - 23:49

461

Views

How are Trott constants found; are there mathematical results?

Published on 25 Mar 2026 - 7:43

List Question

Zeta function but with other set of numbers?

Using the digits $1-9$ each only once find the closest sum to $1000$.

Probability of picking a uniquely colored ball successively without replacement

Logarithms rules using Taylor series?

Prove that there exists a multiple of $2016$, such that the multiple has only $4$ and $6$ as its digits.

How to calculate the number of states of a 7-segment LCD?

Cutting out a circle using circles

Math curriculum high school/ undergrad things that are too formulated?

What are $x$, $y$ and $z$ if $\frac{x}{y + z} + \frac{y}{x + z} + \frac{z}{x + y} = 4$ and $x$, $y$ and $z$ are whole numbers?

Divide a square into rectangles where each occurs once in each orientation

Combinatorics and counting of subsets

Spheres in cylinder and volume

Logic Sign Puzzles

How to figured out a % of an unknown

How are Trott constants found; are there mathematical results?

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