The Indisputable Santa Mathematical Advent Calendar
Day 10

Happy 10th of December!

Throughout the month, to accompany the release of our book on the Mathematics of ChristmasHannah Fry & I are tweeting out Christmathsy bits and pieces, one a day, advent calendar style. Assuming we don’t run out of ideas, that is…

Puzzle time!

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Answers via the comments or on Twitter. All correct answers will be rewarded with deep respect and warm Christmas wishes. Enjoy!

There’s a couple of days before we reveal the answer to the tough Elfnigma from yesterday, so there’s still time to have a go at that one.

CLICK HERE TO SEE THE WHOLE CALENDAR SO FAR

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Day 10

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