SOLUTION: Evaluate C (10, 4)

SOLUTION: Evaluate C (10, 4)

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Question 38039: Evaluate C (10, 4)
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Any number of n things taken r at a time is C(n, r) and equals
C(n, r) = n! / r!(n-r)!
So here
C(10, 4) = 10! / 4!(10-4)! = 10 * 9 * 8 * 7 / 4 * 3 * 2 * 1 = 210
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