原帖由 stupid818 於 2008-4-17 11:42 PM 發表 $ {$ U( k6 u' I) k$ n. G
first, compare 6 and another 6. they must have difference. tvb now,tvbnow,bttvb: {' {6 _0 }. Z' O- t
second, divide those 6 heavier one into two, each has 3. u will find difference again.2 m \( }7 T; V5 S3 G
third time, if u put 2 and they are equal, u will kno ... 7 s7 Q5 a: W0 [3 P- g+ utvb now,tvbnow,bttvb5.39.217.77# u$ n* q/ x4 t, \8 `& }
but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |