原帖由 stupid818 於 2008-4-17 11:42 PM 發表 8 J v4 h5 s* l. G; }' `: W5 {
first, compare 6 and another 6. they must have difference.
9 i5 `9 |* X( |! ^' r, v1 Zsecond, divide those 6 heavier one into two, each has 3. u will find difference again.
0 g6 N" o2 ^/ x) w; }公仔箱論壇third time, if u put 2 and they are equal, u will kno ... - D& Y; D# l+ f: }' M
8 k8 [ w& a8 d( n9 w3 N0 ]but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |