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已知等差数列{an}满足,则(  )A.20         B.22         C.24       ...

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已知等差数列{an}满足已知等差数列{an}满足,则(  )A.20         B.22         C.24       ...,则已知等差数列{an}满足,则(  )A.20         B.22         C.24       ... 第2张(  )

A.20          B.22          C.24           D.-8

【回答】

C

知识点:数列

题型:选择题

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