【例题】5,14,65/2,( ),217/2 A.62 B.63 C. 64 D. 65
【例题】124,3612,51020,( ) A.7084 B.71428 C.81632 D.91836
【例题】1,1,2,6,24,( ) A.25 B.27 C.120 D.125
【例题】3,4,8,24,88,( ) A.121 B.196 C.225 D.344
【例题】20,22,25,30,37,( ) A.48 B.49 C.55 D.81