It's Mathematricks Friday

By Morwenna Evans Friday, April 4, 2014

It's Friday!

This week we're really testing you with a particularly tricky puzzle.

Comment your answers and show us how you got there.

Don't forget to keep your eyes peeled for the solution on Monday.

At a party, everybody shook hands with everybody else.

There were 66 handshakes.

How many people were at the party?

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