first divide it into 3 groups... 4 for each group...
, N+ q' e' R& A- ?5.39.217.76den 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。* T& V8 ]4 T' H
den... left 4 balls...公仔箱論壇, A4 T, o* U+ @9 p9 } {" ~
when u use tat 3 groups to test... u oredi know it is heavier or not...
) |3 R5 I9 C g$ O$ D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,bttvb! N% z& D9 |1 T% V
take the heavier or lighter 1... throw away tat 2 normal ball.... }* @7 G( q7 x* n& K$ p2 v$ c
den u juz nit 2 test the last 2 balls...tvb now,tvbnow,bttvb- J! X. M% v: ?, E
same for now... take the heavier or lighter 1... |