1.2,3,6,15,( ) A.20 B.24 C.32 D.42
2.60,80,104,120,( ) A.164 B.144 C.142 D.201
3.2,4,1,5,0,6,( ) A.-1 B.0 C.1 D.3
4.3,30,29,12 , ( ) A.92 B.7 C.8 D.10
5.2,4,9,23,64,( ) A.92 B.124 C.156 D.186