Chelsea is a very independent woman who happens to be blind. She is packing for an overnight trip to the city, where she will be meeting her sister. She will need to pack one set of clothes for the next day. Chelsea doesn't have anyone to assist her in the task. This is no problem when it comes to packing all of her clothes, except for her socks.
In Chelsea's drawer there are five identical pairs of white socks, and five identical pairs of black socks, all jumbled together (not matched into pairs). There are no other socks in the drawer. Chelsea figures she will just grab enough socks to be sure she is getting a matching pair, and then once she has arrived at her destination, she will consult her sister on the color.
QUESTION: How many socks will Chelsea need to take from the drawer to be sure that she is getting at least one matching pair?
2006-07-19
09:56:43
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25 answers
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asked by
Anonymous
in
Mathematics