divde the 12 balls into 3 sets of 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。# I; [( G/ K) C: _" y0 B# |, }
weight any 2 sets.8 Q8 u+ |3 Y% b5 a: G6 t3 O
if the 2 sets are equal, then you know the heavy one is in the third K5 E7 ~! W# V
if one of the 2 is heavier, then the heavy one is in that set
. ^3 M2 B1 k% ~8 a* vthen divide the 4 balls into 2.8 X# d U2 f8 v
weigh themTVBNOW 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。1 I3 O F) e6 o/ ^! k, c7 v
and divide the heavier into 1TVBNOW 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。, `$ X: b5 K/ U. E$ m9 }! }
and weight them.
, _- Y" s* j7 ~$ V1 n- e3 x weighing and get the ans.
?+ r' K3 f& ~. Z- J7 gTVBNOW 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. |