12,13,25,38,( ),101
A.54 B.63 C.72 D.84
一2, 5, (), 25, 38。A.8 B.14 C.13 D.22
-2,5,(),25,38A.8B.14C.13 D. -22
5,5,12,38,101,() A.229 B.227 C.225 D.223
简算下面各题.9.8×10232×12.5×2.54.13×101-4.13.
2,7,13,20,25,31,()。A.35.B.36C.37D.38
-2 5 ( ) 25 38。A.8B.14C.13D.22