permutations · combinations · multinomials · derangements · Catalan · Stirling
mode
parameters
results
C(n,k) = n! / (k!(n-k)!)C(10,3) = 120
P(n,k) = n! / (n-k)!P(10,3) = 720
n!10! = 3628800
Pascal's triangle (C(10, 0..10) for n=10)
1104512021025221012045101
>ready