Help!!!一道小学数学题目Help!!!
Help!!!一道小学数学题目Help!!!
日期:2007-07-06 10:08:30 人气:1
(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
Help!!!一道小学数学题目Help!!!