**Happy 14th of December!**

**Throughout the month, to accompany the release of our book on the Mathematics of Christmas, Hannah 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…**

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

**CLICK HERE TO SEE THE WHOLE CALENDAR SO FAR**

**SOLUTION TO YESTERDAY’S PUZZLE**

Scroll down for the solution…

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**Solution:**

OK, so this was quite tough, so well done to those who managed it:

The star contributor this time round was undoubtedly SandInThePotatoSalad, with this precise answer:

I quite like this imaginative approach from Olaf Doschke too, though:

Thanks for all the contributions!

*PS. And here’s another entry, which came in after this post was written, that is definitely worthy of mention. Brilliant:*

I know this is a bit late but I thought you might like to see my solution anyway!! @FryRsquared @Mathistopheles #christmaths pic.twitter.com/SUSxVm1Rzz

— Maths Roadshow (@MathsRoadshow) December 14, 2016