divde the 12 balls into 3 sets of 4.
: C; f, W; n k# k8 V. sweight any 2 sets.
( B4 _/ w( j4 ^tvb now,tvbnow,bttvbif 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。! i' U4 F# H, p- g# Z- f
if one of the 2 is heavier, then the heavy one is in that setTVBNOW 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。: q/ ?- {6 }3 F' n& ^3 J8 i0 H5 E8 `
then divide the 4 balls into 2.
, `2 b9 \5 C& ?5.39.217.77weigh themTVBNOW 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。0 N4 D( A$ t/ g' H: U: l& Z8 `
and divide the heavier into 1/ n; r, p8 w" G4 \4 f4 T
and weight them.
' ]& P! S! {3 xtvb now,tvbnow,bttvb3 x weighing and get the ans.
0 C4 @$ N$ a! ?/ R) Cin less than 15 secs. |