first divide it into 3 groups... 4 for each group...+ B) G' f( {: [! C: U, \# K
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...
' p! y6 ?, C0 _. e- t& wtvb now,tvbnow,bttvbden... left 4 balls...8 J* a1 C; b0 k5 [7 J+ F4 g9 e
when u use tat 3 groups to test... u oredi know it is heavier or not...
4 z9 J+ v1 _" I5 d5 B# ]' |so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...! P) X7 l$ Y' X; m8 v- ~4 f7 h
take the heavier or lighter 1... throw away tat 2 normal ball...
" |8 D5 ^* g4 vTVBNOW 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 u juz nit 2 test the last 2 balls...tvb now,tvbnow,bttvb5 H5 O( b0 L& X% }$ c4 ~) n6 i
same for now... take the heavier or lighter 1... |