SOLUTION: An inspector must select three tests to perform in a certain order on a manufactured part.He has a choice of seven tests. How many ways can he perform three different tests?

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Question 634821: An inspector must select three tests to perform in a certain order on a manufactured part.He has a choice of seven tests. How many ways can he perform three different tests?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

An inspector must select three tests to perform in a certain order on a manufactured part.

He has a choice of seven tests. 

How many ways can he perform three different tests? 7P3 = 7!/4! = 7%2A6%2A5