Saturday, February 24, 2018

Coin Flipping Game

You have ten coins in a row, all facing tails up. You are to perform a sequence of moves on the coins where one move consists of flipping over any one coin from tails to heads, then flipping over the coin to its immediate right (whether the second coin is heads or tails does not matter, just flip it over). Can you prove that no matter what moves you select, there are a finite number of moves in the sequence? (In other words, prove that you will always reach a state where there are no more legal moves.) Click below for the answer.

1 comment:

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