1/8+1/16+1/32+1/64+1/128
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256
1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256
1/2-1/4-1/8-16/1-32/1-64/1-128/1-256/1
简便计算1/2+1/4+1/8+1/16+1/32+1/64+1/128
1/2+1/4+1/8+1/16+32/1+1/128没有1/64简算
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=1-1/128 找规律
1+2+4+8+16+32+64+128=
128+64+32+16+8+4+2+1+2/1+4/1+8/1+16/1+32/1=?
1-(1/2)-(1/4)-(1/8)-(1/16)-(1/32)-(1/64)-(1/128)-(1/256)
1-1/2-4/1-1/8-1/16-1/32-1/64-1/128-1/256等于多少?
1-(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256)等于( ).