gensy850711

first divide it into 3 groups... 4 for each group...tvb now,tvbnow,bttvb; [1 L# I$ L' ^
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...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。' @2 n; d2 `  I- H  Q; u+ b
den... left 4 balls...5.39.217.77:88983 M1 @! L- q6 Y. h1 G  K
when u use tat 3 groups to test... u oredi know it is heavier or not...
8 `5 u: V, F  W+ P% ?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。so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
2 y; i* d7 k( r2 }* utake the heavier or lighter 1... throw away tat 2 normal ball...
  r7 V+ u$ o* \( t5 Y9 V6 u6 x& n  lden u juz nit 2 test the last 2 balls...8 y7 q6 ~5 g. n4 ]
same for now... take the heavier or lighter 1...