Saturday, 8 January 2011

Socks in the Dark

Dear Partners,
Greetings from Portugal.
We wish you all a happy new year and here is our first activity of 2011:

There was a problem with the energy supply in the city where Pedro lives and he was left without electricity. He knows he has three pairs of socks in his drawer (one blue, one green and one black). How many socks does he have to pull from the drawer to make sure that he picks two socks with the same color?

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