93,27,12,-9,39,()
A.-126
B.-123
C.31
D.58
8,12,18,27,() A.39;B.37;C.40.5;D.42.5;
1, 3, 3, 9, (), 243。 A.81 B.9 C.12D.27
39,13,13/3,13/9,()。 A.2/3 B.13/27 C.27/13 D.1/2
25, 58, 91, 20, 69, ()。A.14 B.27 C.39 D.9
93,27,12,-9,39,()A.-126 B.-123 C.31 D.58
1 3 3 9 12 36 42 ()。A.56 B.84 C.126 D.160