divde the 12 balls into 3 sets of 4. 公仔箱論壇* n* w# u c- Y c2 j
weight any 2 sets.5 n& x& {# Q) ?, i
if the 2 sets are equal, then you know the heavy one is in the thirdtvb now,tvbnow,bttvb( \% G4 j9 f& ] C9 D- q
if one of the 2 is heavier, then the heavy one is in that settvb now,tvbnow,bttvb, k* c% Q: |" h" e0 J5 D* @# ~
then divide the 4 balls into 2.
( S; r; Z/ {. }0 f7 R9 t6 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。weigh themtvb now,tvbnow,bttvb/ c& |& X; i' n
and divide the heavier into 1
; _7 D- @* K- Z; ~$ K, e5.39.217.77:8898and weight them.公仔箱論壇 X. E) ~# F4 v, e! L9 J( K& m
3 x weighing and get the ans.
8 G3 f# m$ X7 E* ?" utvb now,tvbnow,bttvbin less than 15 secs. |