原帖由 stupid818 於 2008-4-17 11:42 PM 發表 tvb now,tvbnow,bttvb- M/ `( }- r& K _6 u( F+ P
first, compare 6 and another 6. they must have difference.
% K0 U+ [, S! z& q5 U3 Osecond, divide those 6 heavier one into two, each has 3. u will find difference again.www3.tvboxnow.com; K, g" {- I' \# T
third time, if u put 2 and they are equal, u will kno ... 7 a" J! b% K0 q$ S1 i% R
0 O! {2 j9 C H+ ^1 e$ L a2 |but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |