first divide it into 3 groups... 4 for each group...
+ X! U+ a4 E& u& X4 Ftvb now,tvbnow,bttvbden 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,bttvb8 P/ I1 I# i; ]& x S2 e
den... left 4 balls...5.39.217.764 ?" }: U. \) n) e7 ~0 w
when u use tat 3 groups to test... u oredi know it is heavier or not...tvb now,tvbnow,bttvb4 \" v/ J: S6 C) `) P& K7 Y
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...( O$ b/ `* ^1 P
take the heavier or lighter 1... throw away tat 2 normal ball...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。1 P# D" [- z! K
den u juz nit 2 test the last 2 balls...
- i" o! d5 m# U, E, N; Y" fsame for now... take the heavier or lighter 1... |