Question: Exercises 8991 will help you prepare for the material covered in the next section. Evaluate n! (n - r)!r! for n 8 and r =

Exercises 89–91 will help you prepare for the material covered in the next section.Evaluate n! (n - r)!r! for n 8 and r = =

Evaluate n! (n - r)!r! for n 8 and r = = 3.

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