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。* ]9 N$ y: k2 D- K: |& c
weight any 2 sets.tvb now,tvbnow,bttvb! ~9 S, z0 G& L9 x7 ^; Q: c
if the 2 sets are equal, then you know the heavy one is in the thirdwww2.tvboxnow.com V; F5 _# x2 h& c" m
if one of the 2 is heavier, then the heavy one is in that set9 R8 d: }+ M: c m. k& U% v
then divide the 4 balls into 2.tvb now,tvbnow,bttvb- a: ]7 E l6 ]
weigh them
7 M9 W; q" T( g* CTVBNOW 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 1www2.tvboxnow.com; J0 r0 Z, G4 W" p( t2 W+ j
and weight them.tvb now,tvbnow,bttvb+ \0 u2 E4 C3 T' F2 w4 A# V
3 x weighing and get the ans. tvb now,tvbnow,bttvb) x) m S/ f/ y X y
in less than 15 secs. |