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© 1999-2010 by Francis Edward Su
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# Most Popular Math Fun Facts

... sorted by recent user ratings and interest.

 Gamma Function 4.57 Kaprekar's Constant 4.49 Pythagorean Triples 4.48 Nine Point Circle 4.48 Spherical Pythagorean Theorem 4.42 Conic sections 4.39 Riemann Hypothesis 4.39 Monty Hall Problem 4.38 How many Primes? 4.37 Toggling Light Switches 4.36 Hairy Ball Theorem 4.36 Inchworm on a Rubber Rope 4.35 Unbelievable Unlinking 4.35 Borsuk-Ulam Theorem 4.34 Bike with Square Wheels 4.33 Sum of Prime Reciprocals 4.32 Drunken Walker and Fly 4.32 Powers of Ten in Base Two and Five 4.31 Area of a Circle or Regular Polygon 4.31 Sum of Cubes 4.30 One, Two, Three, Pi 4.30 Napoleon's Theorem 4.30 Making History by Card Shuffling 4.30 Why an International Date Line? 4.29 Buffon Needle Problem 4.29 Envy-free Cake Division 4.29 Koch Snowflake 4.29 Sum of Cubes and Beyond 4.29 Largest Known Primes 4.28 Fibonacci GCD's, please 4.28 Really Complex Matrices 4.28 Liouville Numbers 4.28 How GPS Works 4.27 Formula for Primes? 4.27 Regular Solids 4.27 Prime Number Theorem 4.27 Farmers and Pesky Birds 4.27 Dominoes on a Chessboard 4.26 Birthday Problem 4.26 Shortest Pythagorean Proof? 4.26 Though not among the most popular, your Fun Fact now rates: Football Field 3.99 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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