3,23, 61, 117,( )。A.133 B. 191 C.211 D.237

作者: tihaiku 人气: - 评论: 0
问题 3,23, 61, 117,( )。
选项 A.133 B. 191 C.211 D.237
答案 B
解析 本数列为幂次数列的变式,即22-1,52-2,82-3,112-4,2,5,8,11是公差为3的等差数列,1,2,3,4是公差为1的等差数列,故空缺项为142-5 = 191。因此,本题正确答案为B。

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