1.2,8,20,38,62,()A.100 B.92 C.93 D.72
2.2,7,13,20,25,31,() A.35 B.36 C.37 D.38
3.0,3,8,15,24,() A.33 B.35 C.48 D.49
4.1/2,1,4/3,19/12,() A.133/60 B.137/60 C.107/60 D.147/60
5.1,2,4,4,1,() A.16 B.17 C.1/32 D.1/16