ceteriz

divde the 12 balls into 3 sets of 4. 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。( q% {* m( K8 R2 `
weight any 2 sets.
8 n& |* Q1 n- K: @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 third
& k6 M$ _+ H7 f公仔箱論壇if one of the 2 is heavier, then the heavy one is in that set
# ?, [+ A! h, y6 a5.39.217.76then divide the 4 balls into 2.$ r& W1 m1 ~* s6 c
weigh themtvb now,tvbnow,bttvb' ]7 Y) L6 ^9 u- b( T" }) w4 Y8 V1 x1 X7 e
and divide the heavier into 1
! |- ]6 |* X  B, q% F! Dand weight them.
8 K( d" U) G+ J+ b# P! b3 m) s3 x weighing and get the ans.  5.39.217.76  x2 N8 R. T* X( @" h
in less than 15 secs.