first divide it into 3 groups... 4 for each group...
, F: R: V' q) T6 aden 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...
& K2 v' k. ?) [www3.tvboxnow.comden... 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。: h& ~2 h. i# j/ o1 u K% {
when u use tat 3 groups to test... u oredi know it is heavier or not...2 }) g1 m- t$ E9 G/ t
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
% j) W9 g8 o/ j itvb now,tvbnow,bttvbtake the heavier or lighter 1... throw away tat 2 normal ball...
1 ^6 C8 G3 E" M( c2 Q4 Q3 z4 N! Pwww3.tvboxnow.comden u juz nit 2 test the last 2 balls...公仔箱論壇 N, _' M, M0 B2 c% c8 M; B) a( E+ l
same for now... take the heavier or lighter 1... |