first divide it into 3 groups... 4 for each group...
( [) y4 O# Q* U2 j+ P2 }4 w8 x, Atvb 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...5.39.217.76% X; Z! _$ y5 P, E
den... left 4 balls...2 e# j& u4 h1 q, G* V' ~9 ]" N
when u use tat 3 groups to test... u oredi know it is heavier or not...! C3 ]1 g$ ^2 ~ c2 z
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...1 N; T; X V! k
take the heavier or lighter 1... throw away tat 2 normal ball...
" S& U; q; A; |% r! ^) M, bTVBNOW 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 u juz nit 2 test the last 2 balls...# Q- R9 p g5 L: x* n$ I; U& m
same for now... take the heavier or lighter 1... |