divde the 12 balls into 3 sets of 4.
# e0 ^9 d- C( g1 ktvb now,tvbnow,bttvbweight any 2 sets.
) k5 |; a% N# H" M2 H2 fif the 2 sets are equal, then you know the heavy one is in the third
8 A7 }! e; M7 O$ S/ _: s& ^# E& Q4 _公仔箱論壇if one of the 2 is heavier, then the heavy one is in that set) r4 {& q; m8 B% p
then divide the 4 balls into 2.
) Z6 Q7 F- ]9 K- F* g: h1 P) d& U2 ?weigh themTVBNOW 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。3 I: d& H- w- m |; c, z
and divide the heavier into 1( e/ N+ Z- U; o: m) g- k
and weight them.
( Z" P" G6 o0 f5 s' [' l% t( y3 u5.39.217.763 x weighing and get the ans. 0 M* B: ?% m/ {9 T2 J! q
in less than 15 secs. |