Divide the 12 balls into 4 groups of 3's. + [, U% g- Q0 O* I/ M V6 t9 N公仔箱論壇Weigh group 1 & 2 + b! `- G3 [. o# K2 lthen weigh group 2 & 3 % `0 W# v" [$ l% ^2 ~! z* Mtvb now,tvbnow,bttvbIf the results are Equal & Equal, it means the ball with the different weight is in group 4. 0 _! p8 q4 g2 H公仔箱論壇If the results are Equal & Unequal, it means the ball is in group 3.公仔箱論壇4 m9 A* x( k3 z) n7 U0 T- k
If the results are Unequal & Equal, it means the ball is in group 1.www3.tvboxnow.com% L$ o T" W3 s; H- R
If the results are Unequal & Unequal, it means the ball is in group 2. - i: }# k$ I$ q! W5 P$ Q; m b" Nwww3.tvboxnow.com5 M0 i5 H: U/ ]0 U, r, a8 A
Once you determine the group that contains the ball. 7 Z9 }! W2 w1 |6 D5 gwww3.tvboxnow.comSimply weigh two of the balls