2, 12, 36, 80,( )A.175B.150C.125D.100

2, 12, 36, 80,( )


A.175
B.150
C.125
D.100

参考解析

解析:题干规律为2=1X2, 12=2X6, 36=3X12, 80=4X20, 则乘号前为1、2、3. 4下一项应为5,乘号后为2。6,12, 20, 两两做差得到4,6, 8, 10,则下一项应为30,因此括号内应为5X30=150,B选项正确,A. C、D选项错误。故本题应选B.

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