原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
$ Q) H; L& L' d: H2 k5.39.217.76first, compare 6 and another 6. they must have difference. 8 E( P+ e! L5 a, |1 I, p
second, divide those 6 heavier one into two, each has 3. u will find difference again.( X# n: D+ W. E4 @( {% Z/ R
third time, if u put 2 and they are equal, u will kno ... . V& o! R& K, a7 J5 @# A公仔箱論壇tvb now,tvbnow,bttvb: ~( o7 q; ~0 y/ [! [4 t3 S
but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |