first divide it into 3 groups... 4 for each group...: {$ W# P# {9 p9 }9 z
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...公仔箱論壇0 s2 e" T7 X# p, r
den... left 4 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。 Y& B8 F6 d$ p& ]- T
when u use tat 3 groups to test... u oredi know it is heavier or not...' a2 Z/ F6 Q! U* T7 W' q
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。5 v' I& G0 T. x: S8 l3 k1 u' z/ k: Z
take the heavier or lighter 1... throw away tat 2 normal ball...tvb now,tvbnow,bttvb" v# a6 w" U, o: T! J
den u juz nit 2 test the last 2 balls...
1 i8 c, b3 F2 Gwww2.tvboxnow.comsame for now... take the heavier or lighter 1... |