原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
# E* I# }0 Z" T1 M) s3 B3 B/ Yfirst, compare 6 and another 6. they must have difference. 5.39.217.77:8898% g2 A7 H( s- R, o
second, divide those 6 heavier one into two, each has 3. u will find difference again.公仔箱論壇' _! B. J) P* T$ b) ^- b
third time, if u put 2 and they are equal, u will kno ... tvb now,tvbnow,bttvb- S0 h0 u- h+ O1 R. a
5.39.217.77:88988 A" k0 ^! Q$ v" X
but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |