1、2,12,36,80,( )
A.100
B.125
C.150
D.175
2、-1,3,12,28,53,( )
A.106
B.81
C.89
D.90
3、7,9,32,123,620,( )
A. 3720
B. 3715
C. 3705
D. 3680
4、8,48,120,224,360,( )
A.528
B.562
C.626
D.682
5、3,30,29,12,( )
A.92
B.7
C.8
D.10
解析
1.C 2.C 3.B 4.A 5.B