Question

How many latin-square designs are orthogonal to this 4x4 latin square design?

score 696 · Answer 1 · 2026-04-09 10:08:11

696

Views

How many latin-square designs are orthogonal to this 4x4 latin square design?

Published on 09 Apr 2026 - 10:08

score 87 · Answer 2 · 2026-04-10 16:09:57

87

Views

Puzzle relation with geomtry

Published on 10 Apr 2026 - 16:09

score 181 · Answer 3 · 2026-04-08 17:16:17

181

Views

Mathematical guessing

Published on 08 Apr 2026 - 17:16

score 70 · Answer 4 · 2018-11-17 06:23:37

70

Views

The election of knights and knaves

Published on 17 Nov 2018 - 6:23

score 240 · Answer 5 · 2018-11-19 06:03:28

240

Views

To Mock a Mockingbird: The Barber of Seville 3 (logic puzzle)

Published on 19 Nov 2018 - 6:03

score 45 · Answer 6 · 2018-11-20 05:35:40

45

Views

Devising a grading scheme that satisfies two tests

Published on 20 Nov 2018 - 5:35

score 662 · Answer 7 · 2018-11-21 17:10:35

Smallest size of set of real numbers such that the sum of any seven is strictly positive, and the sum of any eleven is strictly negative

score 144 · Answer 8 · 2026-03-25 10:56:00

144

Views

Expected profit of my simple board game

Published on 25 Mar 2026 - 10:56

score 43 · Answer 9 · 2026-03-30 09:13:57

43

Views

Digit permutation puzzle

Published on 30 Mar 2026 - 9:13

score 8.3k · Answer 10 · 2018-11-23 11:28:57

8.3k

Views

Drawing a figure without lifting the pen

Published on 23 Nov 2018 - 11:28

score 503 · Answer 11 · 2026-03-25 04:39:38

503

Views

Rosenfeld's $7 \times 7$ square puzzle

Published on 25 Mar 2026 - 4:39

score 173 · Answer 12 · 2026-03-27 16:09:13

173

Views

Radioactive coins - find the two radioactive coins out of twelve

Published on 27 Mar 2026 - 16:09

score 234 · Answer 13 · 2026-03-25 06:05:16

234

Views

Passing a binary message to a friend where one of the components is always "turned on"

Published on 25 Mar 2026 - 6:05

score 35 · Answer 14 · 2018-11-30 04:12:31

35

Views

Taking a truly random sample of secretaries

Published on 30 Nov 2018 - 4:12

score 87 · Answer 15 · 2026-03-29 10:08:49

87

Views

Smallest number of turns needed to flip $P$ pencils, $N$ per turn, until they all point opposite their starting direction

Published on 29 Mar 2026 - 10:08

List Question

How many latin-square designs are orthogonal to this 4x4 latin square design?

Puzzle relation with geomtry

Mathematical guessing

The election of knights and knaves

To Mock a Mockingbird: The Barber of Seville 3 (logic puzzle)

Devising a grading scheme that satisfies two tests

Smallest size of set of real numbers such that the sum of any seven is strictly positive, and the sum of any eleven is strictly negative

Expected profit of my simple board game

Digit permutation puzzle

Drawing a figure without lifting the pen

Rosenfeld's $7 \times 7$ square puzzle

Radioactive coins - find the two radioactive coins out of twelve

Passing a binary message to a friend where one of the components is always "turned on"

Taking a truly random sample of secretaries

Smallest number of turns needed to flip $P$ pencils, $N$ per turn, until they all point opposite their starting direction

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