回复：排列组合高手请进

来源: lh 于 2012-03-12 20:06:45 [旧帖] [给我悄悄话] 本文已被阅读：次

14！／（5！5！4）

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.