Divide the 12 balls into 4 groups of 3's.5.39.217.77! n, Y9 F! E7 T
Weigh group 1 & 2tvb now,tvbnow,bttvb- m' |" H% E6 C
then weigh group 2 & 3& N6 X; t: ~+ H- \
If the results are Equal & Equal, it means the ball with the different weight is in group 4.5.39.217.77$ x0 x1 S4 o" r
If the results are Equal & Unequal, it means the ball is in group 3.公仔箱論壇7 w: u& t% `& @7 _) G$ e R; ]* c6 R
If the results are Unequal & Equal, it means the ball is in group 1.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。. n( A& g0 B8 Z2 j# M3 Y
If the results are Unequal & Unequal, it means the ball is in group 2. ' x) O% M- C0 Y2 O8 h o" x公仔箱論壇tvb now,tvbnow,bttvb b: U! ^. A v9 G$ n
Once you determine the group that contains the ball. * \+ F5 t2 S- s: u% JSimply weigh two of the balls