SOLUTION: four items are to be randomly selected from the first 25 items on an assembly line in order to determine the defect rate. How many different samples of 4 items can be chosen?

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Question 440570: four items are to be randomly selected from the first 25 items on an assembly line in order to determine the defect rate. How many different samples of 4 items can be chosen?
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi

four items are to be randomly selected from the first 25 items on an assembly

 line in order to determine the defect rate. 

How many different samples of 4 items can be chosen? 

  25C4 = 25!/4!21! = 25*24*23*22/4*3*2 = 12,650 ways