原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
) } v: A& a: D* N1 q3 Z6 w& ntvb now,tvbnow,bttvbfirst, compare 6 and another 6. they must have difference. " K j* A6 V5 d8 I' z K/ w) O
second, divide those 6 heavier one into two, each has 3. u will find difference again.4 k; W# ~; r$ q7 M! _' b. }, ?. ^
third time, if u put 2 and they are equal, u will kno ... 公仔箱論壇7 m. A& E/ M& `5 w! ~
7 H \! ~+ S; R2 w7 D. P( {公仔箱論壇but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |