
Solution to Puzzle
67. TURNING COINS

It would take four moves to turn over the coins so that all the
coins would be tail side up. The table below represents one possible
sequence of moves. Blue represent heads, and red represents
tails. Each row represents a move. Follow the sequence of moves below until
all the coins are tail side up.

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The Last
Recreations: Hydras, Eggs, and Other Mathematical Mystifications
Author: Martin Gardner



