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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.

 Drunken Walker and Fly 4.55 Pigeonhole Principle 4.50 Large Counterexample 4.50 Reflecting on the Hyperbola 4.50 Mug Trick 4.49 Fermat's Little Theorem 4.48 Four Color Theorem 4.48 Van der Waerden Theorem 4.46 Sum of Prime Reciprocals 4.45 Volume of a Cone in N Dimensions 4.45 Sliding Chords 4.44 Memorizing Pi 4.43 Risk-Free Betting on Different Beliefs 4.43 Ordinal Numbers 4.43 Magic Squares, indeed! 4.42 Perfect Shuffles 4.42 Birthday Problem 4.42 Red-Black Pairs Card Trick 4.42 Dedekind Cuts of Rational Numbers 4.41 Sum of Cubes 4.41 One Equals Zero! 4.40 Red-Black Card Trick 4.40 Why Does 0.999... = 1? 4.40 Quick Square Roots 4.40 Klein Bottle 4.39 Conic sections 4.39 High-Dimensional Spheres in Cubes 4.39 Odd Numbers in Pascal's Triangle 4.38 Cantor Diagonalization 4.38 Proof with Words 4.38 Sphere Eversions 4.38 Face Derivatives and Computer Vision 4.38 Matching Problem 4.37 Polyhedral Face Vectors 4.37 Kakeya Needle Problem 4.37 Visual Multiplication with Lines 4.36 Kaprekar's Constant 4.36 How many Rationals? 4.36 Area of an Ellipse 4.36 Six Degrees of Separation 4.35 Though not among the most popular, your Fun Fact now rates: Sums of Two Squares 4.07 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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