A,4/27;B,7/9;C,5/18;D,4/243;
[单选题]1/9,2/27,1/27,()A . 4/27B . 7/9C . 5/18D . 4/243
[单选题]第 3 题 0,1/9,2/27,1/27, ( )A.27B.7/9C.5/18D.4/243
[单选题]1/16,1/27,1/16,1/5,______,7 ( )A.1/16B.1C.2D.1/24
[单选题]:-2,1,-8/27,1/16,( )。A.-32/3125B.32/3125C.-64/3125D.-l28/3125
[单选题]1, 1, 5, 3, 9, 9, 13, 27, ( ), ( )。
[单选题]2,1,4,3,8,9,( ),27。A.12B.14C.16D.18
[主观题]1,1,5,3,9,9,13,27,(),()A.17,81B.16,54C.15,36D.14,42
[单选题]1, 9, 7, 27, 13, ( ), 19, 63A.25 B.33 C.45 D.54
[单选题]12 34 ( ) 98 12 18 27A.6B.7C.10D.11
[单选题]1 2 3 4 ( ) 9 8 12 18 27A.6 B.7 C.10 D.11