gensy850711

first divide it into 3 groups... 4 for each group...
: o6 ?9 `3 n. A$ b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...5.39.217.77:8898! D8 N! ]* N5 B' D" ~- s
den... left 4 balls...
- o! p5 [. m* Z9 a  R7 D9 Y5.39.217.77:8898when u use tat 3 groups to test... u oredi know it is heavier or not...5.39.217.77:88983 l; E: x5 M9 N& s+ X# K: @# O! X
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...
" t" T( l- b$ k0 T$ Dtake the heavier or lighter 1... throw away tat 2 normal ball...
$ w* d" P5 d- S$ L5 G5.39.217.77:8898den u juz nit 2 test the last 2 balls...
; I& ]. \. e& x, {5 f7 W% P  C6 zTVBNOW 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。same for now... take the heavier or lighter 1...