divde the 12 balls into 3 sets of 4. 9 C6 c# e5 ~# p7 ]( A3 e; C
weight any 2 sets.
; `5 J2 `. G& a; h公仔箱論壇if the 2 sets are equal, then you know the heavy one is in the thirdtvb now,tvbnow,bttvb6 {- n4 @! `6 m
if one of the 2 is heavier, then the heavy one is in that set
, M' F/ q( D* t+ D) rwww3.tvboxnow.comthen divide the 4 balls into 2.
6 l: a' \' Z# `1 x0 q" c. ]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。weigh them
7 H' X# ?/ @) tand divide the heavier into 1
U* I8 z a) b. s2 G Cand weight them.
6 C# g$ U( m+ J; q) J' P- d1 c公仔箱論壇3 x weighing and get the ans. ! W- O5 T t2 E
in less than 15 secs. |