18，-2，-2，22，74，( )。 A. 52 B.94 C.158 D.170

作者: tihaiku 人气: - 评论: 0

问题 18，-2，-2，22，74，( )。 A. 52 B.94 C.158 D.170

选项

答案 C

解析本題为三级等差数列，即

20,24,28,32是公差为4的等差数列，则空缺项为74 + 52 + 32 = 158，故本题正确答案为C。

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