this is too easy!!
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) O; t, e m P7 W" X公仔箱論壇1. put 6 at each side.. take the one side which is heavier
& c/ @1 R% F1 C% q" }* O$ J7 s* Y2. put 3 at each side.. also take the heavier sideTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。, b6 E0 R+ Q0 s) l
3. put 1 at each side.. if the weight balance then the one not put inside is the heavy ball.. else the side which is heavier is the heavier ball.. |