# If P(9, r) = 3024, find r.

Given: P(9, r) = 3024

To find: value of r

We know,

So, according to question:

P(9, r) = 3024

(9 – r)! = 5!

9 – r = 5

-r = 5 – 9

-r = -4

The value of r = 4

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