原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
! [+ F' a+ k7 ~( `* w% ?first, compare 6 and another 6. they must have difference. 公仔箱論壇$ ]/ B5 W* d! ~* C7 S9 B7 S
second, divide those 6 heavier one into two, each has 3. u will find difference again.
9 y! @. x* [5 {5 Zthird time, if u put 2 and they are equal, u will kno ... ; p7 u* O0 h! }" O% K. Gtvb now,tvbnow,bttvbtvboxnow.com2 w, V' S, P. G5 T4 |
but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |