原帖由 stupid818 於 2008-4-17 11:42 PM 發表 ; N) E; L; \ g- N4 u
first, compare 6 and another 6. they must have difference.
% w$ X/ Z8 F- S8 m5 I( qsecond, divide those 6 heavier one into two, each has 3. u will find difference again.
1 _6 i9 Q. D8 Jthird time, if u put 2 and they are equal, u will kno ... tvb now,tvbnow,bttvb4 I9 j9 A2 ~! c) O B5 X& E7 p# @
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but the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |