first divide it into 3 groups... 4 for each group...tvb now,tvbnow,bttvb5 b) r- L( k9 _0 e! t5 i
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...公仔箱論壇5 y4 x( O) 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。, y- h! x3 M, ]6 e6 D$ `
when u use tat 3 groups to test... u oredi know it is heavier or not...
9 R, c% p$ @6 c7 h2 P" L" k公仔箱論壇so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...4 O' j2 O% Z% `" u$ b
take the heavier or lighter 1... throw away tat 2 normal ball...5.39.217.77:8898# r+ b N" J" ]
den u juz nit 2 test the last 2 balls...8 x7 F! o& N3 U/ @
same for now... take the heavier or lighter 1... |