first divide it into 3 groups... 4 for each group...
" l) |9 t2 d& R0 o1 q+ ]9 P3 ntvb 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...
, C* F% A% S' ^. o- e) aden... left 4 balls...
0 `9 b2 L( }4 J3 ?& ]when u use tat 3 groups to test... u oredi know it is heavier or not...
, t0 K# U5 g( i; k9 I6 y) F9 e( wTVBNOW 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...
% D3 g% a) k5 M+ [* i; U5 Btake the heavier or lighter 1... throw away tat 2 normal ball...tvb now,tvbnow,bttvb, B3 K, [+ X1 m( a6 ]
den u juz nit 2 test the last 2 balls...
4 t& E! o) J% q5.39.217.77same for now... take the heavier or lighter 1... |