divde the 12 balls into 3 sets of 4.
! M# k, L# X Hweight any 2 sets.tvb now,tvbnow,bttvb, n z/ |4 H+ U. d% J
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。 y' s8 P, N& A4 Q/ M/ h
if one of the 2 is heavier, then the heavy one is in that set
, L' P+ e) S: B& Z! Otvb now,tvbnow,bttvbthen divide the 4 balls into 2.
% v; V b. w0 X# ~) Qweigh them y+ @+ e* @( O* u
and divide the heavier into 1tvb now,tvbnow,bttvb+ j. c$ z5 J$ C# e
and weight them.
+ {" {5 s; k0 Q7 [" G# x# s3 x weighing and get the ans.
9 J& E; w) x" G6 s, @in less than 15 secs. |