divde the 12 balls into 3 sets of 4. 5.39.217.77. U0 ?" }. T- ?" O2 B0 m
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。& a: X v J: i$ B" ^
if the 2 sets are equal, then you know the heavy one is in the third/ \7 }0 _2 m' r: \, d+ x
if one of the 2 is heavier, then the heavy one is in that set5.39.217.77: p7 l- |& H) I2 J
then divide the 4 balls into 2.
! q+ d5 @& v2 L' v7 \8 e' ZTVBNOW 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。weigh them
3 h# ?$ Q4 f7 Ytvb now,tvbnow,bttvband divide the heavier into 1
7 ?: R& s+ M$ { X! m Zand weight them.
9 q1 ~+ B/ ~ M4 ?; Z: X3 x weighing and get the ans.
* @0 E. w( e: k* {4 o5 @2 A5.39.217.77in less than 15 secs. |