divde the 12 balls into 3 sets of 4.
( J" D& x3 A M) p$ O/ Y2 C; f2 Pweight any 2 sets.# P7 P& K ]8 f* \
if the 2 sets are equal, then you know the heavy one is in the third
5 T2 a; h/ B6 {. X; V, y" N" J) hos.tvboxnow.comif one of the 2 is heavier, then the heavy one is in that setTVBNOW 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。& f6 Y+ t2 ]4 Z [- }% w' a! [
then divide the 4 balls into 2.
0 v8 S/ S6 m: d9 J/ Ctvb now,tvbnow,bttvbweigh them
. v0 B3 _' @. g* a. tTVBNOW 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 divide the heavier into 1
9 }$ t! I, f, \! L% U公仔箱論壇and weight them.9 N& [8 K" v, n7 P
3 x weighing and get the ans.
& `0 |2 H0 w, Z1 r+ Cin less than 15 secs. |