divde the 12 balls into 3 sets of 4.
' }* j, Z% u1 P8 z% l# v# M9 T% a% L) \公仔箱論壇weight any 2 sets.www2.tvboxnow.com9 f1 ^8 K% f- @6 K5 p
if the 2 sets are equal, then you know the heavy one is in the thirdtvb now,tvbnow,bttvb9 s1 i7 D6 b6 E
if one of the 2 is heavier, then the heavy one is in that set
- j- e' ~: d8 A1 \, e2 aTVBNOW 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。then divide the 4 balls into 2.- ~) A- t8 }5 m$ y
weigh themwww2.tvboxnow.com: {6 s' B2 H6 M, d7 n9 d- d+ i# a
and divide the heavier into 12 J) M3 h5 W- h7 g: T5 V& E" w9 x
and weight them.
/ l& F3 J; J' z, o b' T6 Ntvb now,tvbnow,bttvb3 x weighing and get the ans.
# }1 X2 w9 K A- ^7 ^. Sin less than 15 secs. |