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数列{an}中,an+1=,a1=2,则a4为 ( ) A. B. C. D.

数列{an}中,an+1=6ec8aac122bd4f6e,a1=2,则a4为                             (   )

 

A.    6ec8aac122bd4f6e                 B.6ec8aac122bd4f6e                     C.6ec8aac122bd4f6e                           D.6ec8aac122bd4f6e

 

D 【解析】略
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