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Puzzle of the Month

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Jigsaw Puzzle

Sunday 1st June 2025

A rectangular jigsaw puzzle has 864 pieces. The number of pieces along its length and width have a lowest common multiple that is six times their highest common factor. How many pieces of the puzzle do not have any straight edges?

Puzzle of the Month about a jigsaw puzzle

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For many more mathematical puzzles visit the Transum Puzzles page.

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