first divide it into 3 groups... 4 for each group...
0 I9 Y3 P; M4 L; h! 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 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...
% i5 S, x0 C( D7 ^) E4 W公仔箱論壇den... left 4 balls...
+ E. S: h$ a) [' O& ewhen u use tat 3 groups to test... u oredi know it is heavier or not...
8 O) E4 `% h7 E7 J/ U0 D0 Z3 q% J公仔箱論壇so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...tvb now,tvbnow,bttvb2 e/ @6 x' ^9 B
take the heavier or lighter 1... throw away tat 2 normal ball...
- P4 T5 A) U* ^/ f! pden u juz nit 2 test the last 2 balls...tvb now,tvbnow,bttvb/ v# e1 p) V2 _% l0 m
same for now... take the heavier or lighter 1... |