first divide it into 3 groups... 4 for each group...
# C, @3 F, ?7 r& \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。den use 2 groups to test... if the weight is same... den throw away these 2 groups.. if not... use another 1 group to test with tat 2 groups... throw away the same weight groups...tvb now,tvbnow,bttvb" q L4 b. x! `- Y
den... left 4 balls...8 h# |1 r% D4 p7 J
when u use tat 3 groups to test... u oredi know it is heavier or not...公仔箱論壇! c8 v2 Y9 @9 Y& w6 r+ @
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
7 m" }0 i" X- Ltvb now,tvbnow,bttvbtake the heavier or lighter 1... throw away tat 2 normal ball...tvb now,tvbnow,bttvb6 |+ M% K7 c2 o
den u juz nit 2 test the last 2 balls...) ~' l! ^4 ?) P
same for now... take the heavier or lighter 1... |