第1个回答 2012-05-22
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-(1/2+1/4+1/8+1/16+1/32+1/32-1/64)
=1-(1/2+1/4+1/8+1/16+1/16-1/64)
=1-(1/2+1/4+1/8+1/8-1/64)
=1-(1/2+1/4+1/4-1/64)
=1-(1/2+1/2-1/64)
=1-(1-1/64)
=1-1+1/64
=1/64