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7 Year old School question

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#algebra-precalculus #puzzle
215
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Lights brain teaser

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#puzzle
73
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Consider $\frac{abc-defc+fagh-iafg}{6}=337$ ($abc$ means $100a+10b+c.$ Find the maximum value of $iafg.$

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#discrete-mathematics #recreational-mathematics #puzzle #decimal-expansion
307
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Given 10 statements relating to one another, what is the maximum number of true statements?

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#logic #puzzle #discrete-optimization
202
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Articles from the Journal of Recreational Mathematics from the 1970s

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#reference-request #puzzle #packing-problem
65
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A combinatorial problem of counting path weights with a special symbolic binary tree

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#combinatorics #graph-theory #puzzle #trees #combinatorial-proofs
664
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How to find how many numbers do not contain the digit n in the range from a to b?

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#algorithms #puzzle
96
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How to prove that an armchair rotated 90 degrees can/cannot reach a position adjacent to starting position

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#puzzle
50
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A math logic problem

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#logic #recreational-mathematics #problem-solving #puzzle #word-problem
88
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What is the equation for the least amount of clues needed for a sudoku puzzle related to size?

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#puzzle
40
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Calculating damage per second that can stack and have stack limit, with variety of durations

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#arithmetic #recreational-mathematics #puzzle
144
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A Combinatorial Game Riddle - two players dividing towers

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#game-theory #puzzle #combinatorial-game-theory
239
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Geometry of a diagonal in a flag

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#geometry #trigonometry #triangles #puzzle
54
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Maximise the number of tokens in your hand

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#optimization #asymptotics #puzzle
62
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Shortest paths along the surfaces of concave solids

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#geometry #optimization #puzzle

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