SOLUTION: How do I figure out how many combinations I can make from a group of numbers?

Question 754605: How do I figure out how many combinations I can make from a group of numbers?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How do I figure out how many combinations I can make from a group of numbers?
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Let "n" be the number of distinct numbers.
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Then the number of combinations of size r is nCr = n!/[(n-r)!*r!]
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Examples:
8C3 = (8*7*6)/(1*2*3) = 56
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Cheers,
Stan H.
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