Divide the 12 balls into 4 groups of 3's.公仔箱論壇& `; V; G$ H: m7 x- D4 z
Weigh group 1 & 2
; j2 m9 P" U# p: L9 T. F" ^1 Jtvb now,tvbnow,bttvbthen weigh group 2 & 3
+ j6 ?/ d/ s) [6 Wos.tvboxnow.comIf the results are Equal & Equal, it means the ball with the different weight is in group 4.tvb now,tvbnow,bttvb; X- ?4 r, L, m7 o2 @- ?* ^
If the results are Equal & Unequal, it means the ball is in group 3.
+ b3 l$ x0 c; h& z, ^# h, UIf the results are Unequal & Equal, it means the ball is in group 1.
; n8 x3 R: K- B( T* ~: a# U- Ktvb now,tvbnow,bttvbIf the results are Unequal & Unequal, it means the ball is in group 2.公仔箱論壇% P) t3 _/ U" M$ g# c
' ]' M- E* y* Q; q* i% |公仔箱論壇Once you determine the group that contains the ball.
7 i4 j( A# {8 ?3 C& MSimply weigh two of the balls |