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New Year's Number Puzzles from The Guardian
12-28-2020, 09:43 AM
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Gerald H Offline
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New Year's Number Puzzles from The Guardian
From The Guardian newspaper:

https://www.theguardian.com/science/2020...twenty-one
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New Year's Number Puzzles from The Guardian - Gerald H - 12-28-2020 09:43 AM



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