SOLUTION: In how many ways can a group of 12 choose a committee of 9?

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Question 466309: In how many ways can a group of 12 choose a committee of 9?
Answer by Edwin McCravy(20056) About Me  (Show Source):
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The combinations of 12 things taken 9 at a time which is sometimes
written as 12C9 , sometimes as 12C9, sometimes as C(12,9),
and sometimes as %28matrix%282%2C1%2C12%2C9%29%29, and sometimes referred to as
"12 choose 9", and it always means

Edwin