單項(xiàng)選擇題2,2,7,9,16,20,()

A.28
B.29
C.30
D.31


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1.單項(xiàng)選擇題1,2,6,30,210,()

A.1890
B.2310
C.2520
D.2730

2.單項(xiàng)選擇題3,7,12,15,9,-18,()

A.-27
B.-45
C.-81
D.-102

3.單項(xiàng)選擇題145,120,101,80,65,()

A.48
B.49
C.50
D.51

4.單項(xiàng)選擇題4,1,0,2,10,29,66,()

A.101
B.116
C.125
D.130

5.單項(xiàng)選擇題1,6,36,216,()

A.1296
B.1297
C.1299
D.1230