divde the 12 balls into 3 sets of 4.
- m0 x1 h, u& tweight any 2 sets.
# Q: A8 c& I! `9 N! [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。if the 2 sets are equal, then you know the heavy one is in the thirdtvb now,tvbnow,bttvb: O- F. F, h9 d( S/ }: n' w
if one of the 2 is heavier, then the heavy one is in that set
0 j$ F: |1 s5 O" x, Y! Othen divide the 4 balls into 2.公仔箱論壇0 a9 @0 f8 T+ _0 z" s" s4 k+ V
weigh them
2 k- x0 |5 a; n' v* Y5 {0 w7 [tvb now,tvbnow,bttvband divide the heavier into 1tvb now,tvbnow,bttvb# I8 t+ G1 C, _3 q8 |
and weight them.8 U) t! t) t, G
3 x weighing and get the ans.
6 l; j, A" Q6 H公仔箱論壇in less than 15 secs. |