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15
Math.TechQA.Club
2026-04-13 18:22:27
128
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Can I express $x^7y+xy+x+1$ by a repeated use of operation $xy+x+y+1$?
Published on
13 Apr 2026 - 18:22
#functions
#puzzle
#computational-mathematics
1k
Views
Number pattern or some logic?
Published on
16 Apr 2026 - 16:06
#recreational-mathematics
#puzzle
#pattern-recognition
329
Views
Can you solve this Diophantine equation really fast: $31x + 30y + 29z = 366$
Published on
12 Apr 2026 - 22:34
#diophantine-equations
#puzzle
2.2k
Views
Knights & Knaves question 28 -seemingly another possibility?
Published on
11 Apr 2026 - 4:37
#puzzle
1.5k
Views
Bruteforcing a keypad lock
Published on
12 Apr 2026 - 12:45
#combinatorics
#permutations
#puzzle
4.6k
Views
The permutation/combination puzzle: What are the maximum number of tickets possible in a game of Tambola?
Published on
13 Apr 2026 - 15:50
#combinatorics
#permutations
#combinations
#puzzle
3.1k
Views
How many moves do I need to solve the leap frog puzzle?
Published on
14 Apr 2026 - 2:58
#combinatorics
#puzzle
127
Views
What sequence was I thinking of?
Published on
11 Apr 2026 - 11:43
#sequences-and-series
#puzzle
222
Views
How to approximate 1/3 by only add/subtracting powers of 2
Published on
10 Apr 2026 - 18:51
#puzzle
481
Views
Finding number 2017 using 1,2,3,4,5,6
Published on
13 Apr 2026 - 1:17
#elementary-number-theory
#puzzle
363
Views
How to solve this mathematical puzzle?
Published on
09 Apr 2026 - 9:49
#combinatorics
#puzzle
#pigeonhole-principle
#maxima-minima
150
Views
ISI 10+2 Question
Published on
13 Apr 2026 - 16:07
#problem-solving
#puzzle
123
Views
Logic Sign Puzzles
Published on
14 Apr 2026 - 17:46
#arithmetic
#recreational-mathematics
#puzzle
162
Views
Computing $\frac{|abcxyz-xyzabc|}{|abc-xyz|}=999$
Published on
14 Apr 2026 - 18:08
#calculus
#number-theory
#puzzle
372
Views
How would I order a list of permutations using a weighting system?
Published on
11 Apr 2026 - 10:36
#puzzle
#computational-complexity
#gambling
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