單項選擇題2,1,6,14,40,108,()
A.288
B.296
C.304
D.312
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1.單項選擇題1/3,1,9,243,()
A.19683
B.19785
C.19827
D.19869
2.單項選擇題2,3,5,9,(),33
A.15
B.17
C.18
D.19
3.單項選擇題
()
A.
B.
C.
D.
4.單項選擇題6,3,5,13,2,63,()
A.-36
B.-37
C.-38
D.-39
5.單項選擇題2,5,9,19,37,75,()
A.140
B.142
C.146
D.149