问题描述: (1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*(1+1/4)*(1-1/4)*(1+1/5)*(1-1/5)=? 1个回答 分类:数学 2014-10-17 问题解答: 我来补答 (1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*(1+1/4)*(1-1/4)*(1+1/5)*(1-1/5)=(3/2)*(1/2)*(4/3)*(2/3)*(5/4)*(3/4)*(6/5)*(4/5)=(1/2)*(6/5)=3/5 展开全文阅读