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        1. 已知等差數(shù)列的公差為.且.若.則為 查看更多

           

          題目列表(包括答案和解析)

          已知等差數(shù)列的公差為,且,若,則為         (    )

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

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          已知等差數(shù)列的公差為,且,若,則

                                                                                                                                                                                  (    )

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

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          已知等差數(shù)列的公差為,且,若,則

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

           

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          已知等差數(shù)列的公差為,且,若,則為                                                           

          A.           B.           C.          D.

           

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          已知等差數(shù)列的公差為,且,若,則
          A.12B.10C.8D.4

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