Permutations & Combinations
Combinatorics is the branch of mathematics dealing with combinations of objects.
Permutations & Combinations
Permutations (Order matters)
60
Combinations (Order doesn't)
10
Formulas
- Permutation (Order matters):
nPr = n! / (n-r)! - Combination (Order doesn’t matter):
nCr = n! / (r! * (n-r)!)