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。7 r3 Q" j' c: J: L+ ~
weight any 2 sets.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。7 n" e l& E+ w2 ]- \
if the 2 sets are equal, then you know the heavy one is in the third5.39.217.77:8898# r2 a8 R2 ~0 u, P) ?" N- A
if one of the 2 is heavier, then the heavy one is in that set7 k. L7 p w# ?( o8 w
then divide the 4 balls into 2.6 R" `9 U# r( A# f( w$ A( ^# X
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。* B6 Z! P# B4 @3 V7 D7 F9 X d
and divide the heavier into 1
6 g) p4 K1 K% N# dTVBNOW 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 weight them.
9 ]8 p. n( {: P7 G# l2 q8 `/ K5.39.217.77:88983 x weighing and get the ans.
3 @( q1 @4 j) W8 C8 G$ _9 f5.39.217.77:8898in less than 15 secs. |