2,12,6,30,25,100,()。 A.96 B.86 C.75 D.50

作者: tihaiku 人气: - 评论: 0

问题 2,12,6,30,25,100,()。 A.96 B.86 C.75 D.50

选项

答案 A

解析偶数项分别为其相邻前一项乘6,5,4,…所得积，奇数项（除第一项）分别为其相邻前一项减去6，5，4，…所得差，所以下一项为100 - 4 = 96，答案为A。

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