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March 29, 2015

Homework Help: math

Posted by Katie on Tuesday, September 27, 2011 at 10:04pm.

Mr. and Mrs. Smith each bought 10 raffle tickets. Each of their three children bought four tickets. If
4280 tickets were sold in all, what is the probability that the grand prize winner is:
a. Mr. or Mrs. Smith? b. one of the 5 Smiths? c. none of the Smiths?

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