Posted by **Tyler** on Wednesday, September 5, 2012 at 12:13am.

Okay,so: Assume that there are 8 unfilled roles:

3 male and 5 female. There are 5 men and 6 women, including Sally, auditioning for a part in the play.

How many of these casts include Sally?

- finite math -
**Reiny**, Wednesday, September 5, 2012 at 8:05am
since Sally has to be chosen, we need 4 more females from the 5 remaining females, and 3 of the 5 men

number of casts with Sally

= 1*C(5,4) * C(5,3)

= 1*5*10 = 50

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