Beach Day by Rodger Bliss
May 2024
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Flip This

A magician shows four fair coins. One is two-headed; the others have both heads and tails.
He places the coins in a black bag and blindly removes one. Repeated flips of the selected coin show “heads”.
After how many flips is it safe to bet with even odds that the selected coin has two heads?

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6 guesses to Flip This