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The minimum number of mice required to find a poisoned bottle.

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#elementary-set-theory #puzzle
1.1k
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Permutation of 1…9 with no ascending or descending subsequence of length 4

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#puzzle #problem-solving #ramsey-theory
162
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creating a more complex sudoku (69x6)

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#combinatorics #puzzle #problem-solving
477
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Checking Sudoku - sufficient sums

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#combinatorics #algorithms #recreational-mathematics #puzzle
2.7k
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What is the least amount of questions to find out the number that a person is thinking between 1 to 1000 when they are allowed to lie at most once

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#puzzle #information-theory
259
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Would I be able to use mathematics to prove properties that would help me solve this series of puzzles?

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#puzzle
593
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Shortest string possible

Published on
#puzzle #formal-languages #context-free-grammar
277
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How many unique rotating sequences?

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#combinatorics #puzzle
105.5k
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Missing dollar problem

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#arithmetic #puzzle #problem-solving
244
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Easy Probability Problem

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#probability #recreational-mathematics #puzzle #bayesian
2.9k
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programming brain teaser

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#algorithms #puzzle
1.5k
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Bodyguards and Laser Beams

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#geometry #puzzle
191
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Interesting and irritating problem.

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#probability #combinatorics #recreational-mathematics #puzzle
2.3k
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Using the digits $7,7,7,7,1$ and the operators $+,-,*,/$ to make a formula which equals $100$

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#recreational-mathematics #puzzle
1.9k
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Chess board problem

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#combinatorics #contest-math #puzzle #chessboard

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