1、7,11,( ),17,19
A.12 B.13 C.15 D.16
2、3,4,6,8,12,( )。
A. 14 B.15 C.17 D.19
3、2,2,16,32,9,27,13,( )
A.26 B.52 C.65 D.40
4、2,3,5,( ),69.
A.14 B.16 C.29 D.52
5、8,49,216,625,( ),729
A.1024 B.1728 C.1466 D.5832
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