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15
Math.TechQA.Club
2026-03-28 16:04:09
298
Views
Deceptively difficult coin weighing puzzles
Published on
28 Mar 2026 - 16:04
#combinatorics
#recreational-mathematics
#puzzle
107
Views
Number of correct Solutions of a 15 puzzle
Published on
30 Jun 2019 - 11:55
#combinatorics
#puzzle
54
Views
Teacher - Parents : How many were they exactly?
Published on
01 Jul 2019 - 4:47
#puzzle
792
Views
Knights and knaves gathering
Published on
10 Apr 2026 - 6:02
#recreational-mathematics
#puzzle
343
Views
How to call complementary sides in tiling shapes
Published on
11 Apr 2026 - 14:16
#geometry
#recreational-mathematics
#puzzle
#tiling
#tessellations
1.2k
Views
How to calculate minimum number of games in round robin with more than two players per games
Published on
11 Apr 2026 - 5:53
#combinatorics
#discrete-mathematics
#graph-theory
#puzzle
115
Views
Knowing that every point in a plane is either black or white ...
Published on
04 Jul 2019 - 13:06
#geometry
#puzzle
112
Views
How many paths from A to B in this specific case?
Published on
04 Jul 2019 - 18:30
#combinations
#puzzle
431
Views
$MATHS\times7=POISON$ where $MATHS$ is a prime
Published on
09 Apr 2026 - 2:42
#elementary-number-theory
#prime-numbers
#puzzle
#cryptarithm
116
Views
The question in the school magazine : $DBSPD-WILL=WIN$
Published on
09 Apr 2026 - 0:54
#puzzle
#cryptarithm
60
Views
How many integers $(n)$ are there where $n + 30$ is a multiple of $2n$?
Published on
08 Jul 2019 - 7:50
#puzzle
168
Views
Switching lamps on and off
Published on
02 Apr 2026 - 11:44
#algorithms
#puzzle
125
Views
Matrix-pair permutation puzzle
Published on
10 Apr 2026 - 4:36
#matrices
#permutations
#puzzle
1k
Views
Determine the missing number in a grid of numbers
Published on
24 Jul 2019 - 23:27
#puzzle
585
Views
$x$, $y$, $z$ are distinct non-zero digits such that $zyx+zyx+zyx=xxx$ (concatenation, not multiplication) ...
Published on
29 Mar 2026 - 20:39
#number-theory
#arithmetic
#puzzle
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