Divide the 12 balls into 4 groups of 3's. 2 ?) x3 ^8 U, V! Y, Z4 n( wWeigh group 1 & 2 ' E0 y3 d* r! U1 G: O0 |1 NTVBNOW 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。then weigh group 2 & 3 & d1 t4 p# @+ W* v2 J; p1 l" cTVBNOW 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. % ?8 ~- x2 d- F3 ?) S( h+ vTVBNOW 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. 1 t& _' H/ D, ?, T+ W4 R' zIf the results are Unequal & Equal, it means the ball is in group 1. - G8 N8 l* q7 ztvboxnow.comIf the results are Unequal & Unequal, it means the ball is in group 2. 5 W) \$ C# O6 d5 ` ' M7 i) y% i6 D2 cOnce you determine the group that contains the ball.. H( z. C% F5 X4 L) X; J6 r7 {$ y
Simply weigh two of the balls