first divide it into 3 groups... 4 for each group...
9 |! R/ S: G6 Bden 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...
+ F) J9 o/ Q; S! i" r0 ]tvb now,tvbnow,bttvbden... left 4 balls...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 d1 I) ^0 M: G/ w: d0 O# N
when u use tat 3 groups to test... u oredi know it is heavier or not...
# `- y' L! w+ j9 ]9 oso when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
6 L& M- x% ^! b6 D+ Dtvb now,tvbnow,bttvbtake the heavier or lighter 1... throw away tat 2 normal ball...公仔箱論壇4 Z* C `! u( \9 n2 O6 @$ X
den u juz nit 2 test the last 2 balls...0 m, M3 ^0 J( R, a! N! ^* x
same for now... take the heavier or lighter 1... |