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Permutation & Combination

Calculate permutations (nPr) y combinations (nCr) con facaial computation. para contaring problems y probability.

Permutations (nPr) (nPr)
720
P(10,3) = 10! / 7!
Combinations (nCr) (nCr)
120
C(10,3) = 10! / (3! × 7!)
Factorial (n!)
3,628,800
10! = 3,628,800