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3 Answers

The number of ways you can pick 5 things from a group of 12, where the order makes no difference. It is a combination.

12C5 =12x11x10x9x8 / 5x4x3x2x1 =

792
by Level 5 User (12.9k points)
It means the combination of 12 and 5.  The formula looks like m!/(n!(m-n)!) where m is 12 and n is 5.  Hope that helps
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15C3
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