gensy850711

first divide it into 3 groups... 4 for each group...
' s' j" ~2 o# O. \7 @/ U9 Itvb now,tvbnow,bttvbden 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/ k$ p2 l& \. K! j8 f8 f" X& v
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。% V5 z+ a. _' E5 Q
when u use tat 3 groups to test... u oredi know it is heavier or not...) v  A7 n# h$ R& G
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...5.39.217.76: Q! g" y$ P. Y$ p) {- r! h
take 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。( v+ c6 X: k/ I5 v5 d
den u juz nit 2 test the last 2 balls...
! y' _) h! g& ?: o9 k, x5.39.217.76same for now... take the heavier or lighter 1...