(1+1/2)*(1+1/4)*(1+1/6)*.*(1+1/10)*(1-1/3)*(1-1/5)*(1-1/7)*(1-1/9)

　　=[(1+1/2)*(1-1/3)]*[(1+1/4)*(1-1/5)]*[(1+1/6)*(1-1/7)]*[(1+1/8)(1-1/9)]*(1+1/10)

　　=[(3/2)(2/3)]*[(5/4)(4/5)]*[(7/6)(6/7)]*[(9/8)(8/9)]*(11/10)

　　=1*1*1*1*(11/10)

　　=11/10

　　同学你好,如果问题已解决,记得右上角采纳哦~~~您的采纳是对我的肯定~谢谢哦