divde the 12 balls into 3 sets of 4.
, R% q& i) j& I. d8 M+ M( J公仔箱論壇weight any 2 sets.tvb now,tvbnow,bttvb! P5 u1 b. Q6 q% D5 k
if the 2 sets are equal, then you know the heavy one is in the thirdTVBNOW 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。6 ]' R; |# k" G- T$ A! z) C
if one of the 2 is heavier, then the heavy one is in that set
/ S) }6 X0 n8 t( Twww3.tvboxnow.comthen divide the 4 balls into 2.
" ^/ {, f. W0 h$ U( K. B' E6 etvb now,tvbnow,bttvbweigh them
/ z, P1 M6 \3 z) s- T9 J- H% l! [www3.tvboxnow.comand divide the heavier into 1tvb now,tvbnow,bttvb! p4 I; J! I# }8 ?
and weight them.2 m C7 L9 Q% ]) G; a4 E( R6 ]" V, h4 y
3 x weighing and get the ans.
4 T( _+ `5 a0 Ein less than 15 secs. |