SOLUTION: Evaluate the given expression. P(n, n − 2)

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Question 1066617: Evaluate the given expression.
P(n, n − 2)
Answer by swincher4391(1107) About Me  (Show Source):
You can put this solution on YOUR website!
So, I'm assuming that P represents the permutation function.
If this is the case, then remember that the formula for P(n,r) = n%21%2F%28n-r%29%21
So, substituting r = n-2 gives us: n%21%2F%28n-%28n-2%29%29%21
But n - (n-2) = 2.
So the answer is simply n%21%2F2%21 = n%21%2F4