gensy850711

first divide it into 3 groups... 4 for each group...
# ~% D9 _. R$ V7 {, g+ o, n! i. p+ A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...
: A1 k9 r& n) S! ^( }1 h5.39.217.77:8898den... left 4 balls...
: z( {1 X; B: N; KTVBNOW 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。when u use tat 3 groups to test... u oredi know it is heavier or not...5.39.217.77:8898& H5 [0 m; u! j" O: B
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...公仔箱論壇# H" k% x+ G9 {/ x& W3 t& f) G
take the heavier or lighter 1... throw away tat 2 normal ball...
& Z; @2 w; [# T6 Stvb now,tvbnow,bttvbden u juz nit 2 test the last 2 balls...
* l& U# ]! g! V# U% p, @tvb now,tvbnow,bttvbsame for now... take the heavier or lighter 1...