Divide the 12 balls into 4 groups of 3's.tvb now,tvbnow,bttvb" T! x$ l, [- r/ R6 D
Weigh group 1 & 2 - }9 ~4 w3 u+ Xthen weigh group 2 & 3 f2 d' h" P& z& v) ^/ N* w3 [www2.tvboxnow.comIf the results are Equal & Equal, it means the ball with the different weight is in group 4.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。2 J5 a6 z' A- w J
If the results are Equal & Unequal, it means the ball is in group 3. ( b( |$ F4 F# z3 P0 O3 d6 J: F# Q4 y# Otvb now,tvbnow,bttvbIf the results are Unequal & Equal, it means the ball is in group 1.公仔箱論壇- ?/ L6 ^" v2 b( z$ i1 f2 H
If the results are Unequal & Unequal, it means the ball is in group 2. 9 p) c* ~: U$ p$ ?. x a, r, p) y 4 W* m9 c& r. ~; S5 ~5 gOnce you determine the group that contains the ball.公仔箱論壇. K! L' f; y% u9 W' t
Simply weigh two of the balls