Divide the 12 balls into 4 groups of 3's.公仔箱論壇0 N7 b1 e7 a# K4 m6 r! w% ^
Weigh group 1 & 2
4 j+ ?# u; e/ k; e% `tvb now,tvbnow,bttvbthen weigh group 2 & 3
" e% T7 i# b _+ i3 l4 v' SIf the results are Equal & Equal, it means the ball with the different weight is in group 4.
% j' D( C; l5 m- Htvb now,tvbnow,bttvbIf the results are Equal & Unequal, it means the ball is in group 3.
6 f5 z2 o( J% f0 |& b: `! wtvb now,tvbnow,bttvbIf the results are Unequal & Equal, it means the ball is in group 1.tvb now,tvbnow,bttvb# z1 U3 S2 \2 V, H/ m
If 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。& r8 \7 U% Z/ Y' h
/ n: [& J% u& a" K$ w3 Nwww3.tvboxnow.comOnce you determine the group that contains the ball.tvb now,tvbnow,bttvb; |0 o& w7 q# U& i& S
Simply weigh two of the balls |