原帖由 stupid818 於 2008-4-17 11:42 PM 發表   
8 `5 a6 p  L: y- r4 W, g4 etvb now,tvbnow,bttvbfirst, compare 6 and another 6. they must have difference.  
* T- V/ ]' K! I5 nsecond, divide those 6 heavier one into two, each has 3. u will find difference again.tvb now,tvbnow,bttvb; N. c, l# E; R4 \ 
third time, if u put 2 and they are equal, u will kno ...   www2.tvboxnow.com0 v. E" ]  u7 } 
公仔箱論壇0 v& B% b+ [' |9 s9 I" L' T 
but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |