divde the 12 balls into 3 sets of 4.
; c, r/ b8 [. N, W3 F. d5.39.217.77:8898weight any 2 sets.5.39.217.77:8898. M2 P) b( T' d% M' G% J: T
if the 2 sets are equal, then you know the heavy one is in the third公仔箱論壇$ L. V# X# |' q! f+ S
if one of the 2 is heavier, then the heavy one is in that set
2 z# N C, y0 @) D公仔箱論壇then divide the 4 balls into 2.
% p) P* I8 W8 _weigh them
* l- r# d6 {$ Y) a' 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 divide the heavier into 11 B" {# }. n% ^7 f# o% ]
and weight them.: b \6 R% o8 A+ ?2 ?) G, ^8 p. K! v
3 x weighing and get the ans.
7 n" N5 r8 D' u6 J' a9 d( x4 fTVBNOW 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。in less than 15 secs. |