原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
. O/ F5 L' p; Ztvb now,tvbnow,bttvbfirst, compare 6 and another 6. they must have difference.
+ M% ]+ s+ o7 }( y0 Jsecond, divide those 6 heavier one into two, each has 3. u will find difference again.5.39.217.77:8898; a; s1 W3 C9 b9 | M+ b7 u7 j2 Y
third time, if u put 2 and they are equal, u will kno ... ; I/ q. v8 O1 m: y8 g4 S' G* O. r6 V% j& H: F5 d* V
but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |