Puzzle page
Hint
Think of the bathroom floor as a rectangular chess board.
If you are stumped by last issue's puzzle, here is the solution.
For some challenging mathematical puzzles, see the NRICH puzzles from this month or last month.
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of Cambridge.
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Permission is granted to print and copy this page on paper for non-commercial use. For other uses, including electronic redistribution, please contact us.
Seven things everyone wants to know about the universe
Issue 47
June 2008
The Plus new writers award 2008
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