Mind-Bending Math & GamesCombinatorics

Your Shuffle Has Never Happened Before

A well-shuffled deck is almost certainly a first in history

People have shuffled cards for centuries, billions of times. So your next shuffle must be a repeat, right? Don't bet on it.

You'll find out

  • How many ways 52 cards can line up
  • How many shuffles it takes to mix
  • What it would take to repeat a shuffle

Why it matters

The same explosion of possibilities keeps strong passwords and encryption keys out of reach of guessers.

About 3 min6 interactive slides · 5 questionsLesson 15 · Zone 2

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