1/2+3/4+7/8+15/16+31/32+63/64+127/128的答案

1/2+3/4+7/8+15/16+31/32+63/64+127/128的答案
1/2+3/4+7/8+15/16+31/32+63/64+127/128的答案

1/2+3/4+7/8+15/16+31/32+63/64+127/128的答案
原式=(1-1/2)+(1-1/4)+(1-1/8)+...+(1-1/128)
=7-(1/2+1/4+1/8+1/16+1/32+1/64+1/128)
=7-(1-1/128)
=6+1/128