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BIG LIST: Statements that look obviously false but cannot be disproved

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#soft-question #recreational-mathematics #big-list #provability
220
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Symmetric monotonic function $f$ on $[0,1]^2$ with $\int_0^1f(x,y)dy=x$

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#real-analysis #integration #recreational-mathematics #surfaces
111
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Comparing the number of real numbers between 2 ranges

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#number-theory #recreational-mathematics #infinity
75
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Where Have I Gone Wrong? 2 Combinatorics Problems

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#probability #combinatorics #discrete-mathematics #recreational-mathematics
123
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Sum of the square of a recursively defined function

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#sequences-and-series #algebra-precalculus #discrete-mathematics #contest-math #recreational-mathematics
24.8k
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How does the three piles magic trick work?

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#recreational-mathematics #problem-solving #puzzle
616
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Problem solving using logic - 3 person card game

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#logic #recreational-mathematics #problem-solving
100
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Simplest Unhalvable Shape

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#general-topology #recreational-mathematics #3d #solid-geometry
48
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Find Equivalent Classes

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#discrete-mathematics #recreational-mathematics
141
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Numbers that are different repeated digits in different bases

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#elementary-number-theory #recreational-mathematics #natural-numbers
188
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Billiard ball mental patients.

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#recreational-mathematics #billiards
109
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Simplify a weighted average with enumerations as weights

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#combinatorics #binomial-coefficients #recreational-mathematics #average #multisets
89
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Point in a square

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#geometry #recreational-mathematics
978
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People's preferences assigning them to a group using Excel

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#combinatorics #recreational-mathematics
118
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How could Bob help Alice

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#recreational-mathematics #information-theory

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