A . 46
B . 48
C . 255
D . 256
[试题]1,3,15,()A.46;B.48;C.255;D.256
[主观题]1,3,15,(),A.46;B.48;C.255;D.256
[单选题]15,3,1,,,( )。A.0B.2C.316D.34
[单选题]:3/15,1/3,3/7,1/2,()。A.5/8 B.4/9 C.15/27 D.-3
[试题]3/15,1/3,3/7,1/2,()A.5/8B.4/9C.15/27D.-3
[单选题]3/15,1/3,3/7,1/2,( )A.5/8B.4/9C.15/27D.-3
[单选题]3/15,1/3,3/7,1/2,()。A.5/8 B.4/9 C.15/27 D.-3
[单选题]1 2 1 3 1 4 4 3 15 7 ? 13A.18 B.20 C.24 D.40
[单选题]1/3,1/15,1/35,( )。A.1/65B.1/75C.1/125D.1/63
[主观题]计算。5/12+1/12=14/15-4/15=3/7-3/7=3/8+3/8=3/10+1/10=5/8-1/8=