A jigsaw puzzle is put together by successively joining
Chapter 5, Problem 13E(choose chapter or problem)
A jigsaw puzzle is put together by successively joining pieces that fit together into blocks. A move is made each time a piece is added to a block, or when two blocks are joined. Use strong induction to prove that no matter how the moves are carried out, exactly n ? 1 moves are required to assemble a puzzle with n pieces.
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