SOLUTION: you are taking a math quiz in which 4 questions are randomly selected from a test bank containing 7 questions. How many versions of the quiz are possible?

Algebra ->  Permutations -> SOLUTION: you are taking a math quiz in which 4 questions are randomly selected from a test bank containing 7 questions. How many versions of the quiz are possible?      Log On


   

Question 452252: you are taking a math quiz in which 4 questions are randomly selected from a test bank containing 7 questions. How many versions of the quiz are possible?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
nCr
=7C4
=7!/((7-4)!*4!)
=35
.
Ed