17,67,41,15,( )。A. 13 B. 11 C.10 D. 9

作者: tihaiku 人气: - 评论: 0
问题 17,67,41,15,( )。
选项 A. 13 B. 11 C.10 D. 9
答案 C
解析 幂次数列。原数列可写成24+1,43+3,62+5,81+7,幂次项的底数和指数都为等差数列,修正项也为等差数列。故所求项应该为100 +9 = 10。正确答案为C。

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