在等比数列{a n}中，已知a 1a 6a 11=8，则a 6=

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='13575' and id < 1103673 and id<>'1103673' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='13575' and id > 1103673 and id<>'1103673' order by id asc limit 5