原帖由 stupid818 於 2008-4-17 11:42 PM 發表 " p3 z& @! W4 o! [* A( x' ]
first, compare 6 and another 6. they must have difference.
$ f6 F0 R5 \! t' }5.39.217.76second, divide those 6 heavier one into two, each has 3. u will find difference again.
4 Q, }7 |) b; z9 f( qthird time, if u put 2 and they are equal, u will kno ... - N7 D* c( x: \
6 X- i z) Z7 mbut the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |