divde the 12 balls into 3 sets of 4. 5.39.217.766 W4 e/ u, M Q/ b4 C
weight any 2 sets.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。" V$ t" d4 S/ K0 k, j3 b3 G- x
if the 2 sets are equal, then you know the heavy one is in the third
\+ \' N# \& {3 [公仔箱論壇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。7 c( j t1 w( W! z u9 u$ V9 r
then divide the 4 balls into 2.tvb now,tvbnow,bttvb* _5 b4 R+ K+ T! s1 G
weigh them公仔箱論壇, S" y! u: w" x8 X
and divide the heavier into 15.39.217.76: ~0 q X9 n. Z9 S; i) ~
and weight them.
( d |* T2 C( s; g$ _5.39.217.763 x weighing and get the ans. 5.39.217.76 Q8 U# Y/ f; ]0 P
in less than 15 secs. |