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Mathematics 18 Online
OpenStudy (anonymous):

what is the value of 9p5?

jimthompson5910 (jim_thompson5910):

Use the formula \[\Large _{n} P_{r} = \frac{n!}{(n-r)!}\]

OpenStudy (xguardians):

Or a calculator if your allowed, you can put P for permutation in as well.

OpenStudy (amistre64):

or, start at 9 and pick 5 .. then mutiply them all together

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