原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
! j' {8 }3 G4 v4 e# Q/ Sfirst, compare 6 and another 6. they must have difference.
& o7 z) P" I" i- E) |: C3 vtvb now,tvbnow,bttvbsecond, divide those 6 heavier one into two, each has 3. u will find difference again.% s$ z* z P& Y. e3 c! B* {" i
third time, if u put 2 and they are equal, u will kno ... 5.39.217.770 ~3 l) r1 b' v8 O
, T5 ?# a4 ?2 }& l* U/ i
but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |