原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
& O) Z+ f+ _: ?5 |first, compare 6 and another 6. they must have difference.
- Z1 d4 r7 `- ?second, divide those 6 heavier one into two, each has 3. u will find difference again.
% w" [7 w& {1 X% U7 stvb now,tvbnow,bttvbthird time, if u put 2 and they are equal, u will kno ... & N5 j+ h) z5 P; v! p# u( J
" q+ z( k# R7 G% B) H2 P" p0 f公仔箱論壇but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |