divde the 12 balls into 3 sets of 4. tvb now,tvbnow,bttvb! l3 j$ d! X. b4 I: x
weight any 2 sets.
& O1 j# i; H" u+ p# ~3 ` a3 }7 i5.39.217.76if 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 L( e$ [. H0 u9 P9 S
if 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。$ x% d, t: M+ F1 ]' Y8 ^; D, L
then divide the 4 balls into 2. k' {; Z' p" i E2 k
weigh them
9 M) _2 I7 d/ v# x) X5.39.217.76and divide the heavier into 1$ \1 n5 C6 v- j, @
and weight them.tvb now,tvbnow,bttvb, B6 O4 r8 Q: o# G% w5 X. N: E
3 x weighing and get the ans. & z4 ^2 ?" H% i0 X9 `
in less than 15 secs. |