divde the 12 balls into 3 sets of 4. 5.39.217.76! t# M2 M2 f: a6 H
weight any 2 sets.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。, r* P+ p. }0 F- v
if the 2 sets are equal, then you know the heavy one is in the thirdTVBNOW 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。4 n' y9 k0 E; y3 C* i
if one of the 2 is heavier, then the heavy one is in that setTVBNOW 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。* Y# P5 o5 S& o) P# i9 C% Q. @
then divide the 4 balls into 2.
/ d! ?5 M2 I+ D公仔箱論壇weigh them
4 y, T) i2 Q# } h" e1 R0 L! r$ `tvb now,tvbnow,bttvband divide the heavier into 12 x; X( ?6 T- K, X! m- S
and weight them.
i N! Y1 d# S& m' g- k3 x weighing and get the ans. 公仔箱論壇7 | N: n+ }) [4 ~) \9 X# E& }/ p, [
in less than 15 secs. |