this is too easy!!公仔箱論壇1 e$ g& U! Y3 z. K9 D5 D, I8 ~4 ^
1 g+ B L9 w9 t- S2 p1. put 6 at each side.. take the one side which is heavier
8 P6 Z1 p t+ A, YTVBNOW 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。2. put 3 at each side.. also take the heavier side
3 R4 O1 U9 M3 l3. 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.. |