gensy850711

first divide it into 3 groups... 4 for each group...os.tvboxnow.com6 J6 ^- L" X* q1 d. }# `4 H6 Y: r5 G
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...0 @& w$ }- n. q3 T3 s/ h
den... left 4 balls...
# H4 \  b2 ?& ^& \/ a' k8 _when u use tat 3 groups to test... u oredi know it is heavier or not...公仔箱論壇7 O" D& Z0 G% y6 E7 h9 Q* @0 z
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...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。: V/ T0 ], h/ f
take the heavier or lighter 1... throw away tat 2 normal ball...5 j& q! Z. z, ^) c; n+ x
den u juz nit 2 test the last 2 balls...
6 G8 m; }( T# K: d$ o, Xsame for now... take the heavier or lighter 1...