*A formula for the number of possible permutations of k objects from a set of n. <math>n_pK or P(n,k)=\frac{n!}{(n-k)!} </math> | *A formula for the number of possible permutations of k objects from a set of n. <math>n_pK or P(n,k)=\frac{n!}{(n-k)!} </math> |