first divide it into 3 groups... 4 for each group...
a, _1 E- K. `% d/ M& mTVBNOW 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...5.39.217.767 d G. M! v: c1 U, Q0 \* a
den... left 4 balls...公仔箱論壇7 T. w4 M( e9 J) S1 u9 t5 R
when u use tat 3 groups to test... u oredi know it is heavier or not...公仔箱論壇7 P! B6 s+ U& h% m2 u
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...tvb now,tvbnow,bttvb! I+ A- {) u) e; e# J7 m
take the heavier or lighter 1... throw away tat 2 normal ball...' L) a( J/ U3 {* q7 Q
den u juz nit 2 test the last 2 balls...
0 t' J( c$ p, r. X公仔箱論壇same for now... take the heavier or lighter 1... |