组合计算器
计算组合(nCr)
公式
C(n,r) = n! / (r!(n-r)!)
Order doesn't matter in combinations.
示例
C(10,3)
= 120
常见问题
关于 组合计算器
Calculate combinations — unordered selections of r items from n.
计算组合(nCr)
Order doesn't matter in combinations.
= 120
Calculate combinations — unordered selections of r items from n.