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Recreational Mathematics
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Demonstrations 101  120 of 963
Other Formulations of the Collatz Problem
Envelope Paradox
Straight Across Puzzle
Making the Three Areas Defined by Congruent Overlapping Circles Equal
Polya Conjecture
Social Golfer Problem
Sydler's Dissection of a Hill Tetrahedron into an Isosceles Triangular Prism
Doyle Spirals
Proposition 7, Book XII, Euclid's Elements
Space Filling with a Rhombic Dodecahedron of the Second Kind
Distorting Jessen's Orthogonal Icosahedron to an Octahedron
The Ray Puzzle
Generating the Surreal Numbers
Country Data and Benford's Law
Opposite Coefficients Method for Solving Two Equations in Two Unknowns
Solving a System of Two Linear Equations with Substitution
The Lonely Runner Conjecture
Napkin Chess
TwistHinged Dissection of a Hexagram to Two Hexagons
Rhamses Puzzle
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