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15
Math.TechQA.Club
2026-04-12 13:17:33
1.7k
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Alphametics Question
Published on
12 Apr 2026 - 13:17
#arithmetic
#contest-math
#puzzle
#cryptarithm
199
Views
A mathematical game: moving tiles
Published on
04 Jun 2014 - 6:39
#group-theory
#graph-theory
#puzzle
521
Views
Math Puzzle Solving
Published on
13 Apr 2026 - 3:41
#recreational-mathematics
#puzzle
200
Views
Prove that it is impossible to make 18
Published on
11 Apr 2026 - 20:26
#puzzle
103
Views
R. Jeffrey and the Three Prisoners
Published on
12 Apr 2026 - 13:25
#soft-question
#puzzle
#conditional-probability
718
Views
Smallest integer $k$ so that no Sudoku grid has exactly $k$ solutions
Published on
07 Jun 2014 - 14:51
#combinatorics
#puzzle
155
Views
Chords of a 20-gon
Published on
12 Apr 2026 - 22:38
#combinatorics
#puzzle
#pigeonhole-principle
120
Views
Finding the ball
Published on
10 Jun 2014 - 14:23
#puzzle
204
Views
Math Competition Question Hong Kong 2
Published on
11 Jun 2014 - 2:38
#geometry
#puzzle
1.6k
Views
When to be sure that we have counted all the squares in such problems
Published on
13 Apr 2026 - 1:31
#combinatorics
#recreational-mathematics
#puzzle
73
Views
Number of tries to guess M-1 letters from M-letters-code.
Published on
14 Jun 2014 - 9:46
#combinatorics
#graph-theory
#puzzle
601
Views
Largest factor of sum of all 3-digit numbers...
Published on
29 Mar 2026 - 22:39
#linear-algebra
#recreational-mathematics
#puzzle
516
Views
History of a combinatoric problem: exchanging numbers by throwing stones
Published on
10 Apr 2026 - 12:01
#combinatorics
#puzzle
#math-history
119
Views
How Many of a Given Weekday Fall in a Month
Published on
11 Apr 2026 - 5:52
#modular-arithmetic
#puzzle
200
Views
Probability Puzzle: Mutating Loaded Die
Published on
11 Apr 2026 - 11:40
#probability
#puzzle
#dice
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