What Is The Formula For Combinations And Permutations?
What Is The Formula For Combinations And Permutations? The formula for permutations and combinations are related as: nCr = nPr/r! What is the formula for a permutation? The formula for a permutation is: P(n,r) = n! / (n-r)! The generalized expression of the formula is, “How many ways can you arrange ‘r’ from a set