原帖由 stupid818 於 2008-4-17 11:42 PM 發表 
5 b# W' f* c0 |' Z2 Ffirst, compare 6 and another 6. they must have difference. 3 P5 n2 j, x n
second, divide those 6 heavier one into two, each has 3. u will find difference again.
9 c/ l5 o* r9 y: xthird time, if u put 2 and they are equal, u will kno ... tvb now,tvbnow,bttvb; y" x+ R+ O6 L
8 h/ J" k3 U/ x% {tvb now,tvbnow,bttvbbut the question has not defined whether the abnormal ball is heavier or ligher than normal ones .... |