gensy850711

first divide it into 3 groups... 4 for each group...8 s/ x, N. F1 Z- h% a9 ~
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...
2 t) E/ p" q: C+ K5.39.217.77den... left 4 balls...
+ l$ h. O) f8 Z- Q, T$ ~4 _when u use tat 3 groups to test... u oredi know it is heavier or not...
0 g% v& o- {8 `- J# y( rtvb now,tvbnow,bttvbso when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
+ R% `% b6 B  f, Y) c0 N5.39.217.77take 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。0 _% _3 R- }8 s6 b/ @- W  Z5 _
den u juz nit 2 test the last 2 balls...
. t$ V4 P9 t0 j) G3 T. Jtvb now,tvbnow,bttvbsame for now... take the heavier or lighter 1...