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© 1999-2010 by Francis Edward Su

# Most Popular Math Fun Facts

... sorted by recent user ratings and interest.

 Sums of Three and Four Squares 4.61 Chords of an Ellipse 4.59 How many Rationals? 4.57 Euler's Product Formula 4.50 Continuum Hypothesis 4.49 Wilson's Theorem 4.48 Square Root of Two is Irrational 4.47 Deal or No Deal 4.47 Prime Number Theorem 4.45 One Equals Zero! 4.43 i to the i is a Real Number 4.40 Area of a Hyperbolic Wedge 4.40 Polyhedral Face Vectors 4.39 Spherical Geometry 4.39 Morley's Theorem 4.39 Rental Harmony 4.38 Odd Numbers in Pascal's Triangle 4.38 Four Fours Problem 4.36 Proof with Words 4.33 Goldbach's Conjecture 4.31 Sine of (1/55555....) 4.31 Difference of Squares 4.30 Pigeonhole Principle 4.30 Greedy to Avoid Progressions 4.29 Finding the N-th digit of Pi 4.29 Pascal's Triangle 4.28 Powers of Ten in Base Two and Five 4.27 Reflecting on the Hyperbola 4.27 Farmers and Pesky Birds 4.27 Pretzel Unlinking 4.26 Sperner's Lemma 4.26 Conic sections 4.26 Does Order of Addition Matter? 4.26 Computability of Real Numbers 4.26 Irrationality by Infinite Descent 4.26 Pythagorean Triples 4.25 Isoperimetric Inequality 4.25 Ellipsoidal Paths 4.24 One, Two, Three, Pi 4.24 Medical Tests and Bayes' Theorem 4.24 Though not among the most popular, your Fun Fact now rates: Koch Tetrahedron 4.18 In addition to these, there are 188 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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