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April 20, 2014

Homework Help: Finite: College Math

Posted by Laura on Friday, January 20, 2012 at 8:01am.

A student wants to buy 3 CDs, but assume that there are 6 CDs featuring the piano,
4 CDs featuring the trumpet, and
7 CDs featuring the saxophone. In how many ways can the selection be made if
CD's featuring at least 2 different instruments
are selected?

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