first divide it into 3 groups... 4 for each group...
. ?6 o5 c, [3 \* Q3 z) i5.39.217.77:8898den 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...
& Q9 l9 j% S& o, h7 V4 ~2 itvb now,tvbnow,bttvbden... left 4 balls..., v |1 C$ g& w$ W* ]# l1 {. C
when u use tat 3 groups to test... u oredi know it is heavier or not...
. h& l: I# G- l+ _so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
) O) R! x; N& g5 D, n# D5.39.217.77:8898take the heavier or lighter 1... throw away tat 2 normal ball...
& p' l4 f& f# Z0 C4 {! y, _; fTVBNOW 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...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。/ h& a" `3 K) Q% Z( [( R x
same for now... take the heavier or lighter 1... |