first divide it into 3 groups... 4 for each group...
7 a4 r8 D+ m/ M; Y3 ?0 l" n& @& ktvb 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...
7 U5 i# u8 A5 Y" K' hTVBNOW 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... left 4 balls...
1 h9 K' f: k! Q/ r6 fTVBNOW 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。when u use tat 3 groups to test... u oredi know it is heavier or not...- |) E7 u1 d0 n2 B0 g5 J
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
& z% U' x5 J, p9 atake the heavier or lighter 1... throw away tat 2 normal ball...3 I8 j. E- {# p) O( a
den u juz nit 2 test the last 2 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。, j+ D1 ^3 Y! Y/ r. W, P0 L5 X
same for now... take the heavier or lighter 1... |