first divide it into 3 groups... 4 for each group...tvb now,tvbnow,bttvb9 d8 ~" E7 e8 x, c3 r
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...tvb now,tvbnow,bttvb1 ?$ r; I. Y1 _# F! K
den... left 4 balls...tvb now,tvbnow,bttvb) d B: P7 a' u
when u use tat 3 groups to test... u oredi know it is heavier or not...
0 z" \+ l9 o+ _" F. [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。so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...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。. v8 A0 W4 e" o
take the heavier or lighter 1... throw away tat 2 normal ball...5.39.217.763 e0 Q( C& w, a$ _
den u juz nit 2 test the last 2 balls...! @- \1 V" b* H2 d. s# ?' a1 {
same for now... take the heavier or lighter 1... |