第1个回答 2007-03-19
6.007812
第2个回答 2007-03-19
64/128+96/128+120/128+124/128+126/128+127/128
=(64+96+120+124+126+127)/128
=657/128
第3个回答 2007-03-19
1/2+3/4+7/8+15/16+31/32+63/64+127/128=?
=64/128+96/128+112/128+120/128+124/128+126/128+127/128
=(64+96+112+120+124+126+127)/128
=769/128
第5个回答 2007-03-19
不就是54/128+96/128+112/128+120/128+124/128+127/128
=769/128