divde the 12 balls into 3 sets of 4. tvb now,tvbnow,bttvb' X+ W: @: o' w- I0 w& v
weight any 2 sets.
* ^0 c, X( S% Z. e3 V3 m2 tTVBNOW 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 the 2 sets are equal, then you know the heavy one is in the thirdTVBNOW 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 I: D0 [0 I x
if one of the 2 is heavier, then the heavy one is in that set
2 D& p6 [* @5 p) j6 E5 ]4 ^www3.tvboxnow.comthen divide the 4 balls into 2.
+ @! U Z, A) W/ o3 g6 tweigh them
) L1 ^1 Z) F( G8 p0 c* q6 T1 |5 D公仔箱論壇and divide the heavier into 1
0 s4 J: m: A) S5 b& n3 N, H( zand weight them.
+ Q6 o0 ?9 \! u+ N/ fwww3.tvboxnow.com3 x weighing and get the ans.
% I) J" J4 [1 S$ h9 h" x! M1 hin less than 15 secs. |