單項(xiàng)選擇題3,7,13,21,31,()
A.38
B.41
C.43
D.49
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1.單項(xiàng)選擇題7.1,8.6,14.2,16.12,28.4,()
A.32.24
B.30.4
C.32.4
D.30.24
2.單項(xiàng)選擇題3,8,15,24,35,()
A.39
B.43
C.48
D.63
3.單項(xiàng)選擇題-2,-2,0,4,10,()
A.12
B.15
C.16
D.18
4.單項(xiàng)選擇題2,4,0,-16,-50,()
A.-104
B.-108
C.-125
D.-128
5.單項(xiàng)選擇題1,3,12,60,360,()
A.1080
B.2160
C.2165
D.2520