SOLUTION: in a class there are 5 male and 5 female students. they want to elect a president and a secretary. in how many ways they can be elected
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Question 630231: in a class there are 5 male and 5 female students. they want to elect a president and a secretary. in how many ways they can be elected Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! in a class there are 5 male and 5 female students. they want to elect a president and a secretary. in how many ways they can be elected
.
Order matters so it's a permutation:
10P2
= 10!/(10-2)!
= 10!/8!
= 9*10
= 90
