divde the 12 balls into 3 sets of 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。& K4 W, e% p* k$ _
weight any 2 sets.tvb now,tvbnow,bttvb+ M ]' n; A4 g, V# e b
if the 2 sets are equal, then you know the heavy one is in the thirdtvb now,tvbnow,bttvb6 B2 ]9 @" K, [+ \+ @7 ?
if one of the 2 is heavier, then the heavy one is in that settvb now,tvbnow,bttvb+ ^* S+ Z+ I" d# p* G2 \
then divide the 4 balls into 2.5.39.217.763 s. Q) B$ l( X7 k/ g
weigh them
5 d4 P) [5 Z9 A7 q5 X& f5.39.217.76and divide the heavier into 1
W7 C) r1 f/ [4 s( j N3 B* B公仔箱論壇and weight them.
& T8 E) O; L' k* n f5.39.217.763 x weighing and get the ans.
, A: ~1 r! ]2 k8 g* |# Qin less than 15 secs. |