Permutation and Combination (nPr, nCr) Calculator

n:    
r:    
     
Permutation:    
Combination:    

Combination calculator Formula:

C(n,r) = n! /(r! * (n - r)!)

Where:

n: n elements (n > 0)

r: r subset elements (0 < r <= n)

Permutation calculator Formula:

P(n,r) = n! / (n - r)!

Where:

r: r subset elements (0 < r <= n)

n: n elements (n > 0)

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Permutation and Combination (nPr, nCr) Calculator
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