4,5,7,16,80,( )A.296 B.423 C.592 D.705

作者: tihaiku 人气: - 评论: 0
问题 4,5,7,16,80,( )
选项 A.296 B.423 C.592 D.705
答案 D
解析 题干无明显特征,考虑做差。后项减前项得到新数列:1、2、9、64,出现9和64考虑幂次数列,可将新数列转化为10、21、32、43,故新数列的下一项应为54,所求项为:80+54,计算尾数为5。D项当选。

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