Divide the 12 balls into 4 groups of 3's. , R3 q& I; s( z: ^$ cwww3.tvboxnow.comWeigh group 1 & 2www3.tvboxnow.com2 _& M3 N: k# ?9 }, D, H
then weigh group 2 & 3* h p3 M% K$ p* `) b+ Z( Z
If the results are Equal & Equal, it means the ball with the different weight is in group 4. ! J( M4 J4 A% D- Q2 q( P6 O" {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。If the results are Equal & Unequal, it means the ball is in group 3.www3.tvboxnow.com. O# d% C3 `* @9 Z3 L7 ]' {
If the results are Unequal & Equal, it means the ball is in group 1. 7 h4 }6 R2 r9 q ~* bIf the results are Unequal & Unequal, it means the ball is in group 2. * d3 H2 l' N- W3 u+ Gwww3.tvboxnow.com 5 d* K8 Y+ i. y0 L( `2 t* lOnce you determine the group that contains the ball.; M/ ~ O1 x0 P; `: F' m) |4 j
Simply weigh two of the balls