2010-3|2-5|4-9|8-17|16-33|32-65|64-129|128-257|256
=2010-8-（1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256）
=2010-8-（1-1/256）
=2010-8-1+1/256
=2001又1/2561/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256为什么=1-1/2561/2+1/4=3/4=1-1/41/2+1/4+1/8=7/8=1-1/81/2+1/4+1/8+1/16=15/16=1-1/161/2+1/4+1/8+1/16+1/32=31/32=1-1/321/2+1/4+1/8+1/16+1/32+1/64=63/64=1-1/641/2+1/4+1/8+1/16+1/32+1/64+1/128=127/128=1-1/1281/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256为什么=1-1/256