divde the 12 balls into 3 sets of 4. tvb now,tvbnow,bttvb, }: @4 [% j/ v# p3 q9 x0 z
weight any 2 sets.
% `5 H9 Z9 @6 @3 r1 ^公仔箱論壇if the 2 sets are equal, then you know the heavy one is in the third
P6 Z* ?( }' a/ H$ d7 GTVBNOW 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。if one of the 2 is heavier, then the heavy one is in that set
, f; T9 J" k6 ?tvb now,tvbnow,bttvbthen divide the 4 balls into 2.
6 s, v) z @4 S& q6 r7 g% GTVBNOW 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
# L$ b; k- G8 e2 dtvb now,tvbnow,bttvband divide the heavier into 1
. ^( q- S5 E: a" ]' o1 `: jTVBNOW 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.; ?2 M9 o* C. r2 X
3 x weighing and get the ans.
; g' F0 w9 R0 ^7 f$ f# zin less than 15 secs. |