题目内容：

1/2+1/4+1/8+1/16+……1/128=?
要简便算法

优质解答

必须根据小学的理解力来解题,高等方法不被接受1/2+1/4+1/8+1/16+1/32+1/64+1/128=(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/128)-1/128=(1/2+1/4+1/8+1/16+1/32+1/64+1/64)-1/128=(1/2+1/4+1/8+1/16+1/32+1/32)-1/128=(1...