divde the 12 balls into 3 sets of 4.
( m' \" C+ l! j" Y- C XTVBNOW 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.tvb now,tvbnow,bttvb/ U' B$ r" v/ b- T4 a
if the 2 sets are equal, then you know the heavy one is in the third
% q4 j( |+ ~9 B& pTVBNOW 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。if one of the 2 is heavier, then the heavy one is in that setos.tvboxnow.com; i! Y- e3 f2 A$ U, [$ ^
then divide the 4 balls into 2.
+ O. p' X! f' y8 ~tvb now,tvbnow,bttvbweigh them: ~' p6 R" F. e K
and divide the heavier into 1
- S4 H/ C7 P- q. X: vos.tvboxnow.comand weight them.tvb now,tvbnow,bttvb" B6 s; v [9 Z; C
3 x weighing and get the ans.
- _" @: _% w5 U- Ein less than 15 secs. |