Can you solve it? Smart as a box of frogs
by Alex Bellos from Science | The Guardian on (#4VYHH)
Slippery brainteasers and a Christmas challenge
UPDATE: solutions and challenge winner can be read here.
Today's puzzles are taken from Mathigon, a wonderful interactive mathematical encyclopaedia. Every year, the site publishes a puzzle a day from Dec 1 to 24. Here are three of my favourites from this year. Jump to it!
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