好多雞，好多鴨，一看就是可可無聊隨手塗鴉。我也考一個，雞鴨同籠，一共有四十八隻腳，二十四個頭，請問，幾隻雞，幾隻鴨？

來源: 布魯司於 2024-11-28 14:37:53 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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