0,7,26,63,124,215,( )A. 285 B. 30 C. 728 D. 342

作者: tihaiku 人气: - 评论: 0
问题 0,7,26,63,124,215,( )
选项 A. 285 B. 30 C. 728 D. 342
答案 D
解析 幂次修正数列。原数列各项可转化为:13-1,23-1,33-1,43-1,53-1,63-1,其规律为n3-1,则空缺项为73-1=342。故本题选择D。

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