问题描述: (1+2/3)×(1- 2/3)×(1+2/5)×(1- 2/5)×...×(1+2/99)×(1- 2/99)=? 1个回答 分类:数学 2014-09-29 问题解答: 我来补答 (1+2/3)×(1- 2/3)×(1+2/5)×(1- 2/5)×...×(1+2/99)×(1- 2/99)=[(5/3)*(7/5)*(9/7)*...*(101/99)]*[(1/3)*(3/5)*(5/7)*...(97/99)]=(101/3)*(1/99)=101/297 展开全文阅读