Divide the 12 balls into 4 groups of 3's.
8 V/ R( a& q& {; dos.tvboxnow.comWeigh group 1 & 2
, v, K# x8 g3 P1 r8 jthen weigh group 2 & 3
2 o" n# u! i9 R" ?0 Cos.tvboxnow.comIf the results are Equal & Equal, it means the ball with the different weight is in group 4.公仔箱論壇" |- P: i. S9 J, o' q* `
If the results are Equal & Unequal, it means the ball is in group 3.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。! w7 c2 ^, t# x" M6 Z
If the results are Unequal & Equal, it means the ball is in group 1.
( M# s; _# F* x5 t公仔箱論壇If the results are Unequal & Unequal, it means the ball is in group 2.tvb now,tvbnow,bttvb0 f" g# O8 g* U' Z% h6 v
" J) i3 h* v; Itvb now,tvbnow,bttvbOnce you determine the group that contains the ball.
7 [- D+ j- |3 S% B4 [0 Sos.tvboxnow.comSimply weigh two of the balls |