已知等差数列满足,则A.2              B.14            C.18        ...

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问题详情:

已知等差数列已知等差数列满足,则A.2              B.14            C.18        ...满足已知等差数列满足,则A.2              B.14            C.18        ... 第2张,则已知等差数列满足,则A.2              B.14            C.18        ... 第3张

A. 2               B. 14             C.18          D. 40

【回答】

 C 

知识点:数列

题型:选择题

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