1-1/2-1/4-1/8-1/16-1/32-1/64
= 1-1/2-1/4-1/8-1/16-1/32-1/64 -1/64 + 1/64
= 1-1+1/64
=1/64为什么1/2+1/4+1/8+1/16+1/32+1/64+1/64=1/2+1/4+1/8+1/16+1/32+1/32=1/2+1/4+1/8+1/16+1/16 = ... =1/2+1/2=1哦谢谢thanks