1,2,4,7()16,22 1,2,6,24,()720,5040 1,3,7,15,()63,127
2道规律题 1 2 4 7 11 16 22 29 37 46 56 1 1 2 6 24 120 720 5040 4
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
2/1+4/3+8/7+16/15+32/31+64/63+.+128/127
1/2+3/4+7/8+15/16+31/32+63/64=127/128=?
简便计算:1/2+3/4+7/8+15/16+31/32+63/64+127+218
简便计算:1/2+3/4+7/8+15/16+31/32+63/64+127/218
1/2+3/4+7/8+15/16+31/32+63/64+127/128
1/2+3/4+7/8+15/16+31/32+63/64+127/128+255/256+511/512+1024/1
1/2+3/4+7/8+15/16+31/32+63/34+127/128+255/256+511/512+1023/1
1+1\2+3\4+7\8+15\16+31\32+63\64+127\128等于多少?急用!
脱式计算:1.(1/7-1/9)×63-2/3 2.8/15×[3/4+(7/16-1/4)]