Question

Arranging numbers from $1$ to $n^2$ in a $n\times n$ board

score 304 · Answer 1 · 2026-03-25 22:04:25

304

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Arranging numbers from $1$ to $n^2$ in a $n\times n$ board

Published on 25 Mar 2026 - 22:04

score 1.5k · Answer 2 · 2026-03-22 18:34:48

1.5k

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Number theoretic puzzle involving 123456789

Published on 22 Mar 2026 - 18:34

score 153 · Answer 3 · 2026-03-25 20:34:56

153

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Puzzle reference request: planting trees in a semicircle orchard

Published on 25 Mar 2026 - 20:34

score 1.1k · Answer 4 · 2026-03-27 04:38:35

1.1k

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Travel time of $n$ people by group: generalizing the Bridge-and-Torch Problem

Published on 27 Mar 2026 - 4:38

score 812 · Answer 5 · 2026-04-09 07:32:36

812

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Parity of number of pieces on the black squares of a chessboard

Published on 09 Apr 2026 - 7:32

score 64 · Answer 6 · 2026-04-06 00:15:04

64

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Choosing three numbers from $(0,1)$

Published on 06 Apr 2026 - 0:15

score 106 · Answer 7 · 2026-04-06 22:33:16

106

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2017 numbers - a puzzle

Published on 06 Apr 2026 - 22:33

score 4.3k · Answer 8 · 2026-04-09 00:06:01

4.3k

Views

Rigorous proof to show that the $15$-Puzzle problem is unsolvable

Published on 09 Apr 2026 - 0:06

score 630 · Answer 9 · 2026-04-07 01:46:34

630

Views

Round Table Combinatorics-Blind Bartender Problem

Published on 07 Apr 2026 - 1:46

score 184 · Answer 10 · 2026-04-09 23:47:24

184

Views

Closed orbits of a geometrically defined dynamical system

Published on 09 Apr 2026 - 23:47

score 169 · Answer 11 · 2018-04-05 17:50:01

169

Views

A $5\times 5$ grid of single-digit numbers in $\mathbb N$, with one cell empty. What number should be in the cell?

Published on 05 Apr 2018 - 17:50

score 444 · Answer 12 · 2026-04-09 21:32:38

444

Views

Prisoners wearing infinite stack of hats

Published on 09 Apr 2026 - 21:32

score 63 · Answer 13 · 2026-04-09 05:23:44

63

Views

Pair Arrangement Problem

Published on 09 Apr 2026 - 5:23

score 58 · Answer 14 · 2018-04-11 17:39:24

58

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How to solve these types of questions? What is the methodology behind these types of questions?

Published on 11 Apr 2018 - 17:39

score 262 · Answer 15 · 2018-04-11 23:39:03

262

Views

Why is more likely for a run of three 0s to be followed by a 1 than a 0 in a 50/50 random binary string?

Published on 11 Apr 2018 - 23:39

List Question

Arranging numbers from $1$ to $n^2$ in a $n\times n$ board

Number theoretic puzzle involving 123456789

Puzzle reference request: planting trees in a semicircle orchard

Travel time of $n$ people by group: generalizing the Bridge-and-Torch Problem

Parity of number of pieces on the black squares of a chessboard

Choosing three numbers from $(0,1)$

2017 numbers - a puzzle

Rigorous proof to show that the $15$-Puzzle problem is unsolvable

Round Table Combinatorics-Blind Bartender Problem

Closed orbits of a geometrically defined dynamical system

A $5\times 5$ grid of single-digit numbers in $\mathbb N$, with one cell empty. What number should be in the cell?

Prisoners wearing infinite stack of hats

Pair Arrangement Problem

How to solve these types of questions? What is the methodology behind these types of questions?

Why is more likely for a run of three 0s to be followed by a 1 than a 0 in a 50/50 random binary string?

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