Divide the 12 balls into 4 groups of 3's. . C$ f" E6 m# N! o8 tWeigh group 1 & 2' M6 F& K6 O$ ^
then weigh group 2 & 3 3 q+ S8 Y) q; ]) [8 b: j. qIf the results are Equal & Equal, it means the ball with the different weight is in group 4. 8 a' L, m7 v5 U" k% fIf the results are Equal & Unequal, it means the ball is in group 3.www3.tvboxnow.com2 B6 ~: W& c5 {' B1 ]: T$ X
If the results are Unequal & Equal, it means the ball is in group 1.* J2 y% z1 S$ E
If the results are Unequal & Unequal, it means the ball is in group 2.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。& t- u( D/ _6 i+ E( c: [1 A7 P
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Once you determine the group that contains the ball.tvb now,tvbnow,bttvb n* @% i& {) I1 {, ^
Simply weigh two of the balls