divde the 12 balls into 3 sets of 4.
( w4 \$ Q' A3 U$ A' s0 X3 cweight any 2 sets.% o0 G9 p/ [9 X& I
if the 2 sets are equal, then you know the heavy one is in the third
: T3 l5 R4 f6 t8 v% mtvb now,tvbnow,bttvbif one of the 2 is heavier, then the heavy one is in that set$ E: r( m: g+ O4 n4 ~' y, n
then divide the 4 balls into 2.
4 f' f! o3 M* k" yweigh them
; r& J4 D3 t9 U) Z% s2 `3 g5.39.217.77:8898and divide the heavier into 1
5 w+ M( D+ y$ F1 i5 R# lTVBNOW 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。and weight them.tvb now,tvbnow,bttvb7 o! W# o; q" d3 Y( a, V
3 x weighing and get the ans.
3 m1 a8 h, @4 I: J" t7 B公仔箱論壇in less than 15 secs. |