Squeeze coins through holes that should be too small, read people’s minds, and work out their bank details – all using maths.
Getty Images/iStockphoto JamieAW
Getty Images/iStockphoto JamieAW
Bet someone you can fit a two-pence coin through a hole the size of a five-pence coin.
Draw a circle exactly the same size as a five-pence coin. Cut it out of the paper, leaving as perfectly circular a hole as possible. Your challenge now is to fit a two-pence coin through that hole without ripping the paper.
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