【例题1】3,7, 47,2207,( )
A.4414 B.6621 C.8828 D.4870847
【例题2】20,22,25,30,37,( )
A.39 B.45 C.48 D.51
【例题3】1,4,15,48,135,( )
A.730 B.740 C.560 D.348
【例题4】16,27,16,( ),1
A.5 B.6 C.7 D.8
【例题5】4,12,8,10,( )
A.6 B.8 C.9 D.24
【例题6】4,11,30,67,( )
A.126 B.127 C.128 D.129
【例题7】0,1/4,1/4,3/16,1/8,( )
A.1/16 B.5/64 C.1/8 D.1/4
【例题8】102,1030204,10305020406,( )
A.1030507020406 B.1030502040608 C.10305072040608
D.103050702040608
【例题9】3,10,29,66,( )
A.37 B.95 C.100 D.127
【例题10】1/2,1/9,1/28,( )
A.1/65 B.1/32 C.1/56 D.1/48