first divide it into 3 groups... 4 for each group...
4 `0 f$ @4 X( L+ ?tvb 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...
, l7 v" c2 w) c4 |7 P8 B4 ^! ITVBNOW 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...& R. x6 Z# [9 F+ a
when u use tat 3 groups to test... u oredi know it is heavier or not...公仔箱論壇' }2 c( t2 b4 H. ^
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...tvb now,tvbnow,bttvb; X; h6 j4 B: G; v& ~5 B. N7 G
take the heavier or lighter 1... throw away tat 2 normal ball...
) w, v' t! h/ S9 e7 A9 Jden u juz nit 2 test the last 2 balls...
( D: ^5 M9 i; z公仔箱論壇same for now... take the heavier or lighter 1... |