原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
6 W' H2 t Z# [4 y" xfirst, compare 6 and another 6. they must have difference.
9 z8 i8 ^4 i; O$ |1 {& I% Dtvb now,tvbnow,bttvbsecond, divide those 6 heavier one into two, each has 3. u will find difference again.
b6 o$ T! y) Z* {4 j! Q+ {third time, if u put 2 and they are equal, u will kno ... ' ]$ U3 Q) Z4 G/ N% R5 _; ntvb now,tvbnow,bttvb5.39.217.76 t( A) p% P- q% Z
but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |