Divide the 12 balls into 4 groups of 3's." X- X# y# u' G$ `9 A4 C# E
Weigh group 1 & 2 8 n1 D$ g3 z* `then weigh group 2 & 3 . i3 X+ e* [& k3 n k7 _( u5.39.217.76If the results are Equal & Equal, it means the ball with the different weight is in group 4.' x+ v* a2 z0 f8 Y& ^% n
If the results are Equal & Unequal, it means the ball is in group 3. 7 }: n& \" x2 Y, V" _, nTVBNOW 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. / R8 B# U2 L- V# `( i3 ^5.39.217.76If the results are Unequal & Unequal, it means the ball is in group 2.TVBNOW 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。# P+ `3 U/ o& y' c5 W- K. T
% A' {; e0 Y8 Y# u3 mtvb now,tvbnow,bttvbOnce you determine the group that contains the ball.6 S1 x4 r7 i; i
Simply weigh two of the balls