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数列满足,则等于 ( ) A.15 B.10 C.9 D.5

数列说明: 6ec8aac122bd4f6e满足说明: 6ec8aac122bd4f6e,则说明: 6ec8aac122bd4f6e等于                 (    )

       A.15                      B.10                      C.9                        D.5

 

A 【解析】略
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(本小题满分14分)

        若由数列说明: 6ec8aac122bd4f6e生成的数列说明: 6ec8aac122bd4f6e满足对任意的说明: 6ec8aac122bd4f6e其中

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