2,1,3,5,18,()
A.58
B.60
C.78
D.94
2/3,1/2,3/7,7/18,() A.5/9;B.4/11;C.3/13;D.2/5
2/3, 1/2, 3/7, 7/18,() A.5/9 B.3/13 C.4/11 D. 2/5
2,1,3,5,18,()A.58 B.60 C.78 D.94
3,4,12,18,44,()A.44B.56C.78D.79
用竖式计算。(1)216×78=(2)407×18(3)150×60=(4)360×12=(5)156×59=(6)240×48=