问题描述: 概率论中C(8,3)除以C(10,3)怎么算 1个回答 分类:综合 2014-10-14 问题解答: 我来补答 C(m,n)=m!/[(m-n)!n!]C(8,3)=8!/(5!3!)C(10,3)=10!/(7!3!)C(8,3)/C(10,3)=[8!/(5!3!)]/[10!/(7!3!)]=(8!7!3!)/(10!5!3!)=(7×6)/(10×9)=7/15 展开全文阅读