Permutation & Combination Calculator (nPr, nCr)
Permutation and combination calculator: nCr, nPr and arrangements with repetition, e.g. lottery odds.
C(n, r) = n!r! (n − r)!
How to use this calculator
- Type your input in the box.
- The result updates as you type.
- Use “Copy result” or “Copy link” to share it.
Combinations ignore order: C(n, r) = n!/(r!(n − r)!). Permutations count order: P(n, r) = n!/(n − r)!.
Choosing 6 numbers out of 49 gives 13 983 816 possible tickets.
Frequently asked questions
How many ways to pick 6 from 49?
13,983,816.