divde the 12 balls into 3 sets of 4.
# i+ ~$ K( d* G' k公仔箱論壇weight any 2 sets.8 P! Q& z. U/ g1 t
if the 2 sets are equal, then you know the heavy one is in the third
' p+ d0 q! J* \; k7 v3 pTVBNOW 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; a; y7 D7 \( x6 ~& _9 o
then divide the 4 balls into 2.
1 c0 d/ G3 D; l W7 Rtvb now,tvbnow,bttvbweigh themos.tvboxnow.com0 `5 K' X: ^) G! h: `6 M) {4 c7 H
and divide the heavier into 1! r9 C& K( v' c& I2 y* J
and weight them.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。3 f9 n- {$ e1 n3 N* x
3 x weighing and get the ans.
; p9 j$ ^" k" v1 g- G; r5 ?: Utvb now,tvbnow,bttvbin less than 15 secs. |