first divide it into 3 groups... 4 for each group...
7 Z+ |1 f+ U/ e+ y公仔箱論壇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,bttvb) G/ C3 C, }) _% R9 q2 R& z
den... left 4 balls...* v- @$ f8 O# y- \9 h2 d8 R; g
when u use tat 3 groups to test... u oredi know it is heavier or not...
' q8 F( t } r0 vtvb now,tvbnow,bttvbso when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
8 I+ L; ~+ E9 F. K! u0 \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。take the heavier or lighter 1... throw away tat 2 normal ball...
' s: n: A3 O' o5 j. H" Oden u juz nit 2 test the last 2 balls...
! P) W. O1 f( w! l( y0 |tvb now,tvbnow,bttvbsame for now... take the heavier or lighter 1... |