原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
9 f$ E: H2 y( Y7 I" i- F. Mtvb now,tvbnow,bttvbfirst, compare 6 and another 6. they must have difference. tvb now,tvbnow,bttvb- G$ `2 Q9 H2 G }' F+ H6 d
second, divide those 6 heavier one into two, each has 3. u will find difference again.. L5 ^3 Q0 F) p. S' r
third time, if u put 2 and they are equal, u will kno ... ) H c5 q# a: P- _: b3 J! A
公仔箱論壇0 e6 G; m% v ~; P7 _5 C
but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |