3,19,53,111,( ),323。A. 199 B. 200 C. 232 D. 276

作者: tihaiku 人气: - 评论: 0

问题 3,19,53,111,( ),323。

选项 A. 199 B. 200 C. 232 D. 276

答案 A

解析多级数列。本题属于三级等差数列。原数列 3—19—53—111—(199)—323 后项减去前项 16—34—58— (88)—(124) 后项减去前项 18—24—30—(36) 故本题选A。

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