SOLUTION: A committee of 3 is to be formed from a group of 20 people. How many different committees are possible?

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Question 344354: A committee of 3 is to be formed from a group of 20 people. How many different committees are possible?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
20 chosen 3 at a time is found by calculating
20! / [(20-3)!*3!]
which works out to
(20*19*18) / (3*2*1) =
1140