24/06/2026
dev
Penney's Game: The Coin-Flip Bet Where Going Second Always Wins
A short explainer on Penney's Game, the non-transitive coin-flip game where the second player can always pick a three-flip sequence that beats the first player's — sometimes 7 to 1. Includes the optimal-response rule and the full odds table.
probability math games statistics non-transitive fun