2, 1, 1, 2, 8, ( )A.16 B.32 C.64 D.128

作者: tihaiku 人气: - 评论: 0
问题 2, 1, 1, 2, 8, ( )
选项 A.16 B.32 C.64 D.128
答案 C
解析 后一项除以前一项依次为1/2,1,2,4,(8),是公比为2的等比数列,应填入8×8=64,选C。

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