SOLUTION: A reading list for a course in world literature has 20 books on it. How many ways can you choose 4 books to read, using Combinations?

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Question 378337: A reading list for a course in world literature has 20 books on it. How many ways can you choose 4 books to read, using Combinations?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
nCr=n!/((n-r)!r!)
20C4=20!/(16!*4!)
=4,845 ways
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Ed