Permutation calculator
Enter values to see results and the formula.
Calculate
Example values are ready
Review the inputs, then select Calculate.Calculation formula
P(n,k) = n!/(n−k)!
仅处理有限实数；结果采用双精度浮点数，请按输入精度取舍。Enter values to see results and the formula.
Example values are ready
Review the inputs, then select Calculate.P(n,k) = n!/(n−k)!
仅处理有限实数；结果采用双精度浮点数，请按输入精度取舍。