divde the 12 balls into 3 sets of 4.
% Y6 O0 A }& uTVBNOW 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。weight any 2 sets.
% x. P) J7 z# p' vtvb now,tvbnow,bttvbif the 2 sets are equal, then you know the heavy one is in the third
% y7 C3 C6 v- d; ~& U6 }if one of the 2 is heavier, then the heavy one is in that set
/ Z" j/ d4 \- S+ i, a% T! ~$ jthen divide the 4 balls into 2.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。2 v! y8 r; P, m$ _. V3 D& u4 m
weigh them3 V+ F8 q3 |8 V' k
and divide the heavier into 1
" B/ T" E4 D. \# Cand weight them.公仔箱論壇. d: R# P/ k/ A$ w0 Q
3 x weighing and get the ans.
9 y# R" O9 j4 D/ [& F1 Uwww3.tvboxnow.comin less than 15 secs. |