3/1+4/3+8/7+16/15+32/31+64/63+128/127+256/255怎么算?

3/1+4/3+8/7+16/15+32/31+64/63+128/127+256/255怎么算? 1/2+3/4+7/8+15/16+31/32+63/64+127/128+255/256这道计算题怎么简算? 如何计算1/2+3/4+7/8+15/16+31/32+63/64+127/128怎么简便计算? 1/2加3/4加7/8,加15/16加31/32加,63/64 怎么简算? 4/3+16/15+36/35+64/63+100/99+144/143+196/195+256/255怎么计算 -1/2-1/4-1/8-1/16-1/32-1/64-1/128-1/256怎么简算? 1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256怎么算? 1 2 4 8 16 32 64怎么算 1/2+3/4+7/8+15/16+31/32+63/64+128/127+255/256 1/2+3/4+7/8+15/16+31/32+63/64+127/128+255/256 1+2+4+8+16+32+64+128快速算怎么算 10个数相任意几个数相加可能出现的和怎么算,1,2,4,8,16,32,64,128,256,489,怎么算出结果1-1