某密码由4位不同数字组成，已知各位 密码之和为偶数，则密码有多少种？

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='31556' and id < 2528179 and id<>'2528179' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31556' and id > 2528179 and id<>'2528179' order by id asc limit 5