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。( e6 `% ]* W/ Y
weight any 2 sets.公仔箱論壇' V. O8 V2 _, P: f
if the 2 sets are equal, then you know the heavy one is in the third9 G6 p6 {. ?8 e. K2 ]
if one of the 2 is heavier, then the heavy one is in that set
; A& O6 }# l& t, ^- _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。then divide the 4 balls into 2.
4 I- V6 m n2 @- q7 q( W- STVBNOW 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。weigh them- x A* X( x+ i
and divide the heavier into 10 Z% Z$ }! x( p4 Y& R/ V
and weight them., @$ l+ T! x6 M, i# n" N
3 x weighing and get the ans.
: B& v% ~- i5 f* Q" [tvb now,tvbnow,bttvbin less than 15 secs. |