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15
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Peter winkler's "Numbers" puzzle "Zeroes, Ones, and Twos"

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#puzzle #natural-numbers
395
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Impossible? Finding a closed loop on a six-sided die that crosses face $n$ exactly $n$ times, without returning to a face from one step before

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#general-topology #graph-theory #puzzle #dice
225
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Defective clock questions - Watch gaining 3 minutes every hour

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#arithmetic #puzzle
179
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Check my solution on a card flipping game

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#probability #puzzle
184
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A Simpsons Riddle

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#puzzle #word-problem
320
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Infected Dinner Brainteaser

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#combinatorics #puzzle
71
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Puzzle of an ant rearranging stacks of seeds in a line

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#combinatorics #puzzle #invariance
539
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Expected number of children until more girls than boys

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#probability #puzzle
227
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Counterfeit money, guaranteeing a profit

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#probability #optimization #game-theory #puzzle #gambling
92
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Can anybody tell me how to find the value of $\alpha$?

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#puzzle
210
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Expectation problem of postman

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#expected-value #conditional-expectation #puzzle
125
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Can we generate a valid $9\times 9$ sudoku using this algorithm?

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#probability-distributions #algorithms #recreational-mathematics #puzzle
106
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The best strategy that the fireman should use in this problem is?

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#optimization #puzzle
76
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Expectation of removing subtree

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#expected-value #puzzle
45
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How many locks and keys: combinatorics problem

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#combinatorics #puzzle #combinatorial-designs

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