Homework Help: algebra 2/help

Posted by Marie on Wednesday, May 16, 2012 at 12:03am.

7) A theater is staging a series of 10 different plays.You want to attend at least 2 of the plays.How many different combinations of plays can you attend?

algebra 2/help - Damon, Wednesday, May 16, 2012 at 1:03am
combinations of ten taken two at a time
= 10!/[ 8!*2!] = 10*11/2 = 55

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