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？（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31289' and id < 2511578 and id<>'2511578' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31289' and id > 2511578 and id<>'2511578' order by id asc limit 5