OT: Math help. Permutations and Combinations

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OT: Math help. Permutations and Combinations

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February 26th, 2007, 11:43 PM

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Re: OT: Math help. Permutations and Combinations

! = factorial.

For nice positive integers, you start with the number, and multiply it by all the numbers below it until you get to 1.

5! = 5x4x3x2x1 = 120

It gets uglier when you throw in negatives, or fractional numbers.

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