1, 1, 3/4, 1/2, ( )A.1/6 B.3/8 C.3/10 D.5/16

作者: tihaiku 人气: - 评论: 0
问题 1, 1, 3/4, 1/2, ( )
选项 A.1/6 B.3/8 C.3/10 D.5/16
答案 D
解析 各项依次可以写为1/1,2/2,3/4,4/8,(5/16),分子是连续自然数,分母是公比为2的等比数列。

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