Most Popular Math Fun Facts

• Derivative Paradox 4.60
• Whiffle Ball 4.58
• Gabriel's Trumpet 4.57
• Finding the N-th digit of Pi 4.56
• Kaprekar's Constant 4.55
• Visual Multiplication with Lines 4.54
• Euler's Product Formula 4.54
• Pretzel Unlinking 4.53
• Impossible Integral? 4.52
• Four Fours Problem 4.51
• Fundamental Group 4.50
• Does Order of Addition Matter? 4.49
• Area of an Ellipse 4.49
• Arclength Surprise 4.49
• Hailstone Numbers 4.49
• Wilson's Theorem 4.48
• Birthday Problem 4.48
• Sperner's Lemma 4.46
• Sum of Cubes and Beyond 4.46
• Area of a Circle or Regular Polygon 4.46
• Buffon Needle Problem 4.45
• Repeating Digits 4.45
• Pick's Theorem 4.44
• Inductive Tiling 4.44
• Continuum Hypothesis 4.43
• Devil's Staircase 4.42
• Really Complex Matrices 4.42
• Volume of a Ball in N Dimensions 4.42
• Largest Known Primes 4.42
• Sums of Two Squares Ways 4.42
• Proof with Words 4.42
• Conic sections 4.42
• Fibonacci GCD's, please 4.41
• Difference of Squares 4.41
• Unbelievable Unlinking 4.41
• Successive Differences of Powers 4.41
• Rising Sequences in Card Shuffling 4.41
• Dedekind Cuts of Rational Numbers 4.41
• Sine of (1/55555....) 4.41
• Thinned-Out Harmonic Series 4.41

• Though not among the most popular, your Fun Fact now rates: Repunit Fun 4.23

See a random Math Fun Fact. Also available are a list of recent Math Fun Facts, or a list of all Math Fun Facts.