Homework Help: algebra 2/help

Posted by Marie on Tuesday, May 15, 2012 at 10:01pm.

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 - MathMate, Wednesday, May 16, 2012 at 7:41am
10C2 = 10!/((10-2)!2!)
x!=factorial x=x(x-1)(x-2)....(2)(1)

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