题目内容：

1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256怎么算?
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256怎么算哦
用裂项的方法算

优质解答

1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256=1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/256-1/256=1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/128-1/256=1/2+1/4+1/8+1/16+1/32+1/64+1/64-1/256=1/2+1/4+1/8+1/16+1/32+1/32-...