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> 等差数列中,,,则( )A.13      B.15              C.17    D.19   

等差数列中,,,则( )A.13      B.15              C.17    D.19   

问题详情:

等差数列等差数列中,,,则( )A.13      B.15              C.17    D.19   中,等差数列中,,,则( )A.13      B.15              C.17    D.19    第2张等差数列中,,,则( )A.13      B.15              C.17    D.19    第3张,则等差数列中,,,则( )A.13      B.15              C.17    D.19    第4张(  )

A.13       B.15                C.17     D.19   

【回答】

B等差数列等差数列中,,,则( )A.13      B.15              C.17    D.19    第5张中,等差数列中,,,则( )A.13      B.15              C.17    D.19    第6张等差数列中,,,则( )A.13      B.15              C.17    D.19    第7张等差数列中,,,则( )A.13      B.15              C.17    D.19    第8张 

根据等差数列的通项公式得到等差数列中,,,则( )A.13      B.15              C.17    D.19    第9张 故*为:B

知识点:数列

题型:选择题

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