first divide it into 3 groups... 4 for each group...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。! A6 y& E8 @) ]6 b5 `4 T
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...& s6 s; Y# O; L3 u: j7 A' V% E- d
den... 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。! X p4 i( u5 s# L6 ~ ?( W
when u use tat 3 groups to test... u oredi know it is heavier or not...$ q1 X* h5 W- ?
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
3 P" N$ L- _- ]tvb now,tvbnow,bttvbtake the heavier or lighter 1... throw away tat 2 normal ball...
" P7 o+ b5 l, P% uden u juz nit 2 test the last 2 balls...tvb now,tvbnow,bttvb, {* M4 }- l6 j+ V/ p4 r& f
same for now... take the heavier or lighter 1... |