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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.

 Fundamental Group 4.57 Binary Card Trick 4.48 Unbelievable Unlinking 4.45 Pigeonhole Principle 4.44 Riemann Hypothesis 4.44 Making Magic Squares 4.42 Sum of Cubes and Beyond 4.42 Liouville Numbers 4.40 Scrabble Identity 4.39 Kakeya Needle Problem 4.39 Fermat's Little Theorem 4.38 Medical Tests and Bayes' Theorem 4.37 Largest Known Primes 4.36 Prime Number Theorem 4.35 i to the i is a Real Number 4.35 Football Field 4.35 Pass the Beer 4.35 Bike with Square Wheels 4.33 Perfect Shuffles 4.33 Divisibility by Seven 4.33 One, Two, Three, Pi 4.33 Van der Waerden Theorem 4.33 Vickrey Auction 4.33 Koch Snowflake 4.32 Quick Square Roots 4.32 Sine of (1/55555....) 4.31 Reuleaux Wheel 4.30 Hairy Ball Theorem 4.30 Four Color Theorem 4.30 How many Rationals? 4.30 Continuous but Nowhere Differentiable 4.29 Why an International Date Line? 4.29 Sliding Chords 4.28 Brouwer Fixed Point Theorem 4.28 Surface Area of a Sphere 4.28 Leapfrog Addition 4.28 Sperner's Lemma 4.28 Chords of a Unit Circle 4.27 Face Derivatives and Computer Vision 4.27 Gaps in Primes 4.26 Though not among the most popular, your Fun Fact now rates: Misleading Sequence 3.98 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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