Permutation Combination Calculator
About Permutation Combination Calculator
Calculate nPr and nCr.
How to Use
Calculate nPr and nCr. Enter the N and R values and review the Permutations and Combinations outputs after you calculate.
- Open the calculator : Use Permutation Combination Calculator from the Math category.
- Check the inputs : Review the required values and any optional settings.
- Read the formula : Use the formula and notes below to understand how the result is produced.
Common Questions
What formula does the Permutation Combination Calculator use?
nPr = n!/(n-r)! and nCr = n!/(r!(n-r)!).
Inputs
- N
- R
Outputs
- Permutations
- Combinations
Formula
nPr = n!/(n-r)! and nCr = n!/(r!(n-r)!)