Divide the 12 balls into 4 groups of 3's. 6 q: G* G: z! X6 k4 c b; b% }5.39.217.76Weigh group 1 & 25.39.217.765 s! f$ x6 U& p" a" v9 ]( T, Z
then weigh group 2 & 3 + l6 t# v6 n3 @3 o7 ^/ ]' ~If the results are Equal & Equal, it means the ball with the different weight is in group 4.2 u, {' G) W8 w2 M
If the results are Equal & Unequal, it means the ball is in group 3. 0 T! Z1 ~( X7 w/ U. g+ BTVBNOW 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 Unequal & Equal, it means the ball is in group 1.tvb now,tvbnow,bttvb" a' P: D1 r3 L9 k4 ?. p# f( K! p
If the results are Unequal & Unequal, it means the ball is in group 2.* }9 d4 `. [9 w- E @8 M& E$ r5 k) }2 x
/ Q2 Z* ?2 T' l# j5 }8 m公仔箱論壇Once you determine the group that contains the ball.$ n# f6 q6 S+ A' t8 ^: D
Simply weigh two of the balls
[CASE 1]公仔箱論壇9 u _# U4 U, ^; q
個異重波係C組,即其他A,B組都係正常波,好易搞,將C組其中兩個波同兩個正常波稱,如果重量不同,即所拿去稱的C組兩個波中有異重波,如果相同重量即 C組餘下兩個波中有異重波,再將兩個含異重波的其中一個同一個正常波稱,如果重量不同即拿去稱的就是異重波,如果相同重量即餘下未稱的一個C組波就是異重波。
[CASE 2]* {4 k' D8 {8 ?5 w
重D果邊叫A組,輕 D果邊叫B組,為方便稱呼,將A組編為A1,A2,A3,A4,B組編為B5,B6,B7,B8,而頭先C組果4個則是正常波。A組重過B組,即異重波可能是在A組[較正常波重]或在B組[較正常波輕],將A1,B5加一個正常波同A2,B6,B7稱,A3,A4,B8放埋一邊。結果有以下三個﹕