Hourglass puzzle: Difference between revisions
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You can measure 9 hours by flipping the 4 hour glass once, then |
You can measure 9 hours by flipping the 4 hour glass once, then |
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flipping the remaining sand in the 7 hour glass when the 4 hour glass ends.</pre> |
flipping the remaining sand in the 7 hour glass when the 4 hour glass ends.</pre> |
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=={{header|REXX}}== |
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