17个奇数和17个偶数的平均数，保留 一位小数时是6.5,保留两位小数时该平均数是？

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31553' and id < 2527834 and id<>'2527834' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31553' and id > 2527834 and id<>'2527834' order by id asc limit 5