divde the 12 balls into 3 sets of 4. 公仔箱論壇6 s! `/ |1 F; O1 |/ b- Q
weight any 2 sets.公仔箱論壇9 ? R+ O7 N o5 D9 f2 a
if the 2 sets are equal, then you know the heavy one is in the third公仔箱論壇& e! w1 ` O; C; z
if one of the 2 is heavier, then the heavy one is in that setTVBNOW 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。* d( `/ I6 {9 A8 N* x
then divide the 4 balls into 2.+ |. }+ v B4 v! A1 ?
weigh them5.39.217.77:88986 L( |2 g1 x: F8 F' u. i: P
and divide the heavier into 1tvb now,tvbnow,bttvb' M& T0 O) u, _% G/ z8 H( X8 f; B! d
and weight them.
6 _4 B* W$ P8 v5.39.217.77:88983 x weighing and get the ans.
* a3 ?% i4 x' X5 a# D9 KTVBNOW 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。in less than 15 secs. |