Question

Shapes that can tile convex regions with only certain numbers of copies

score 33 · Answer 1 · 2026-04-10 11:13:50

33

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Shapes that can tile convex regions with only certain numbers of copies

Published on 10 Apr 2026 - 11:13

score 99 · Answer 2 · 2026-04-15 11:04:43

99

Views

Can all large integer $n \times(n+1)$ rectangles be tiled with smaller copies of distinct $k\times(k+1)$ rectangles?

Published on 15 Apr 2026 - 11:04

score 92 · Answer 3 · 2026-04-09 08:36:00

92

Views

Arrangements of triominoes and tetrominoes where each touches polyominoes of total area 4 times their own

Published on 09 Apr 2026 - 8:36

score 293 · Answer 4 · 2026-04-09 11:40:03

293

Views

Base-Exponent Invariants

Published on 09 Apr 2026 - 11:40

score 73 · Answer 5 · 2026-04-13 15:41:03

73

Views

A question involving the expansion of $(x+2)^n$

Published on 13 Apr 2026 - 15:41

score 65 · Answer 6 · 2026-04-11 12:21:05

65

Views

How many milliliters in 100 grams?

Published on 11 Apr 2026 - 12:21

score 932 · Answer 7 · 2026-04-10 21:53:32

932

Views

Calculate the tension in OA and OB

Published on 10 Apr 2026 - 21:53

score 480 · Answer 8 · 2026-04-16 06:07:52

480

Views

Find positive integers $a$ which there exists an integer $b, 0 \leq b \leq 2002$, such both quadratics $x^2+ax+b$ and $x^2+ax+b+1$ have integer roots.

Published on 16 Apr 2026 - 6:07

score 1.7k · Answer 9 · 2026-04-17 06:15:21

1.7k

Views

Difficult coin weighing puzzle: 14 coins, 1 fake (heavier or lighter), 3 pre-determined weighings

Published on 17 Apr 2026 - 6:15

score 96 · Answer 10 · 2026-04-14 23:42:38

96

Views

Let s be the smallest positive integer with the property that its digit sum and the digit sum of s + 1 are both divisible by 19. Number of digits s?

Published on 14 Apr 2026 - 23:42

score 399 · Answer 11 · 2026-04-14 16:20:38

399

Views

Is the Frog game solvable in the root of a full binary tree?

Published on 14 Apr 2026 - 16:20

score 198 · Answer 12 · 2026-04-10 10:54:19

198

Views

3blue1brown Playing Pool with Pi Variation.

Published on 10 Apr 2026 - 10:54

score 119 · Answer 13 · 2026-04-12 03:47:17

119

Views

How can I get out from the room alive in this recreational problem(Also known as "brain teasers")?

Published on 12 Apr 2026 - 3:47

score 65 · Answer 14 · 2026-04-12 03:36:54

65

Views

Coin toss puzzle

Published on 12 Apr 2026 - 3:36

score 256 · Answer 15 · 2026-04-11 13:28:56

256

Views

articles that explain Conway's game of life

Published on 11 Apr 2026 - 13:28

List Question

Shapes that can tile convex regions with only certain numbers of copies

Can all large integer $n \times(n+1)$ rectangles be tiled with smaller copies of distinct $k\times(k+1)$ rectangles?

Arrangements of triominoes and tetrominoes where each touches polyominoes of total area 4 times their own

Base-Exponent Invariants

A question involving the expansion of $(x+2)^n$

How many milliliters in 100 grams?

Calculate the tension in OA and OB

Find positive integers $a$ which there exists an integer $b, 0 \leq b \leq 2002$, such both quadratics $x^2+ax+b$ and $x^2+ax+b+1$ have integer roots.

Difficult coin weighing puzzle: 14 coins, 1 fake (heavier or lighter), 3 pre-determined weighings

Let s be the smallest positive integer with the property that its digit sum and the digit sum of s + 1 are both divisible by 19. Number of digits s?

Is the Frog game solvable in the root of a full binary tree?

3blue1brown Playing Pool with Pi Variation.

How can I get out from the room alive in this recreational problem(Also known as "brain teasers")?

Coin toss puzzle

articles that explain Conway's game of life

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