SOLUTION: Solve for n nP4=84 nC2 *show work using factorial notation

SOLUTION: Solve for n nP4=84 nC2 *show work using factorial notation

Algebra.Com

Question 1147295: Solve for n
nP4=84 nC2 *show work using factorial notation
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

I don't see how it makes any sense to ask to show work in factorial notation....

So

(n-2) and (n-3) are consecutive positive integers; their product is 42. You should be able to solve that equation by inspection....

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