已知等差数列的公差为.且.若.则是 A. B. C. D. 查看更多

 

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已知等差数列的公差为,且,若,则为         (    )

       A.12                      B.8                        C.6                        D.4

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已知等差数列的公差为,且,若,则

                                                                                                                                                                        (    )

         A.12                              B.8                                C.6                                D.4

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已知等差数列的公差为,且,若,则

   A.12           B.10           C.8            D.4

 

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已知等差数列的公差为,且,若,则为                                                           

A.           B.           C.          D.

 

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已知等差数列的公差为,且,若,则
A.12B.10C.8D.4

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