124, 3612, 51020, (  ) A. 77084 B. 71428 C. 81632 D. 91386

作者: rantiku 人气: - 评论: 0
问题 124, 3612, 51020, (  ) A. 77084 B. 71428 C. 81632 D. 91386
选项
答案 B
解析 解题指导: 124:1×2=2,2×2=4;3612:3×2=6,6×2=12;51020:5×2=10,10×2=20;数列中首位:1、3、5、(7)为连续的奇数列;符合规律的只有71428,故答案为B。

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