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© 1999-2010 by Francis Edward Su

# Most Popular Math Fun Facts

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 Projective Planes 4.63 Riemann Hypothesis 4.63 Liouville Numbers 4.59 Thinned-Out Harmonic Series 4.59 Sum of Prime Reciprocals 4.53 Right Double Cone 4.48 Lucas' Theorem 4.46 Fermat's Little Theorem 4.45 Suspended Rope Trick 4.45 Sine of (1/55555....) 4.43 Square Root of Two is Irrational 4.42 Gabriel's Trumpet 4.39 Social Choice and the Condorcet Paradox 4.38 Powers of Ten in Base Two and Five 4.37 Goldbach's Conjecture 4.36 Envy-free Cake Division 4.36 Music Math Harmony 4.34 Banach-Tarski Paradox 4.33 Six Degrees of Separation 4.32 Squaring Numbers between 40 and 60 4.31 Inductive Tiling 4.31 Fibonacci GCD's, please 4.31 Sum of Cubes 4.30 Really Complex Matrices 4.30 Borsuk-Ulam Theorem 4.29 Napoleon's Theorem 4.29 Pi Approximations 4.29 One Equals Zero! 4.28 Magic Squares, indeed! 4.28 Reflecting on the Hyperbola 4.28 Hyperbolic Geometry 4.28 Polyhedral Face Vectors 4.28 Buffon Needle Problem 4.27 Euler's Formula 4.26 Inchworm on a Rubber Rope 4.26 Quick Square Roots 4.26 Sum of Cubes and Beyond 4.25 Hugging the Equator 4.25 Repeating Digits 4.24 Proofs without Words 4.23 Though not among the most popular, your Fun Fact now rates: Seven Shuffles 4.14 In addition to these, there are 190 more Fun Fact files. See a random Math Fun Fact. Also available are a list of recent Math Fun Facts, or a list of all Math Fun Facts.

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