October 8, 2015

Homework Help: Finite

Posted by Chelsea P on Monday, January 28, 2013 at 12:22am.

the student wants to buy 3 CDs, but assume that there are 3 CDs featuring the piano, 5 CDs featuring the trumpet, and 7 CDs featuring the saxophone. (2) In how many ways can the selection be made if CD's featuring at least 2 different instruments are selected?

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