Divide the 12 balls into 4 groups of 3's.tvb now,tvbnow,bttvb9 g$ D) \* U! n! }: [
Weigh group 1 & 2/ F- @3 @% J& c7 J4 a
then weigh group 2 & 3 3 d( Q. U2 d5 U! |8 y! WTVBNOW 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.www3.tvboxnow.com, S4 q* q; p1 \
If the results are Equal & Unequal, it means the ball is in group 3.. J% t* R: v: o
If the results are Unequal & Equal, it means the ball is in group 1. 9 }5 u! Z W. ^4 itvb now,tvbnow,bttvbIf the results are Unequal & Unequal, it means the ball is in group 2. ) o/ \7 R5 v% q$ Q公仔箱論壇www3.tvboxnow.com( \+ i) v$ H; C8 S. O, R
Once you determine the group that contains the ball.1 ]" U9 s% s s" r* ^0 [
Simply weigh two of the balls