first divide it into 3 groups... 4 for each group...tvb now,tvbnow,bttvb5 P- l, x2 x8 M [3 V6 d9 s! n
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...
4 v; C `# k3 \* L4 N7 Lden... left 4 balls...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。% ]( A1 I0 Y! f9 O! i
when u use tat 3 groups to test... u oredi know it is heavier or not...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。5 U* w- r$ L0 \8 T6 j8 O
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
# e, ~, P. C: P x) e9 D2 Atvb now,tvbnow,bttvbtake the heavier or lighter 1... throw away tat 2 normal ball...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。$ @. n- v' {: v
den u juz nit 2 test the last 2 balls...
7 h0 a5 b- ]: j9 _tvb now,tvbnow,bttvbsame for now... take the heavier or lighter 1... |