first divide it into 3 groups... 4 for each group...公仔箱論壇4 c, [# Z8 ]4 {* q. L( r/ A. z) Z5 u
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...
) e$ H: a, e9 B# z: e5 Q$ F" 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。den... left 4 balls...tvb now,tvbnow,bttvb+ G3 d' ^2 I8 l; |
when u use tat 3 groups to test... u oredi know it is heavier or not... M- V% m' G' B9 o# O
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...公仔箱論壇- d! @9 m3 Z* a( K2 p
take the heavier or lighter 1... throw away tat 2 normal ball...
) R2 e8 P Z& e7 E- Z0 m) Q1 Gtvb now,tvbnow,bttvbden u juz nit 2 test the last 2 balls... u$ d- S+ M8 S5 M
same for now... take the heavier or lighter 1... |