divde the 12 balls into 3 sets of 4.
, T* W5 l2 a2 ?! s5 k5 q' _& 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.1 `: O, R& O+ h3 `# D
if the 2 sets are equal, then you know the heavy one is in the thirdtvb now,tvbnow,bttvb' L9 F9 }( e/ C% V: D4 e% g
if one of the 2 is heavier, then the heavy one is in that set公仔箱論壇6 T$ J( u- A- \$ f, V
then divide the 4 balls into 2.
5 [7 l/ v! P+ [0 x+ b9 s* cweigh them
: m0 L, n2 m7 I9 F8 t公仔箱論壇and divide the heavier into 1tvb now,tvbnow,bttvb% s7 S! u0 T% ~
and weight them.6 L- k2 x7 ^% F) v% H2 a
3 x weighing and get the ans.
* X# f' J9 x4 X# b9 F5 `公仔箱論壇in less than 15 secs. |