Divide the 12 balls into 4 groups of 3's. 7 ~1 `* D* L: B: n$ G K6 RWeigh group 1 & 2 h" g/ p; Y- Zthen weigh group 2 & 3 1 |/ N( f$ u C4 g/ |. }; LTVBNOW 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。If the results are Equal & Equal, it means the ball with the different weight is in group 4.公仔箱論壇: ^: A/ g. M) X8 y3 h _* q
If the results are Equal & Unequal, it means the ball is in group 3. ' w- F6 R: v, Q0 }( rTVBNOW 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。If the results are Unequal & Equal, it means the ball is in group 1. ! L: o4 G4 T7 h5.39.217.77If the results are Unequal & Unequal, it means the ball is in group 2.5.39.217.775 M k ~ T, F+ \9 z
4 Y9 L( \4 W( T3 IOnce you determine the group that contains the ball. 6 e d+ S) \! Q+ B公仔箱論壇Simply weigh two of the balls