A.21
B.24
C.9
D.20
[单选题]:1,4,9,15,18,( )A.21B.24C.9D.20
[单选题]18,9,4,2,(),1/6A . 3B . 2C . 1D . 1/3
[单选题]1,2,4,6,9,(),18A .11B .12C .13D .18
[单选题]1 2 3 4 ( ) 9 8 12 18 27A.6 B.7 C.10 D.11
[单选题]12 34 ( ) 98 12 18 27A.6B.7C.10D.11
[单选题]1,2,4,3,5,6,9,18,( )。A.14B.24C.27D.36
[单选题]1,2,4,3,5,6,9,18,( )。A.14B.24C.27D.36
[单选题]1,2,4,3,5,6,9,18,( )。A.14B.24C.27D.36
[单选题]1,2,4,3,5,6,9,18,( )。A.14B.24C.27D.36
[单选题]1,2,4,3,5,6,9,18,( )。A.14B.24C.27D.36