i find one solution that is similar , g( P8 X. M* ^6 l5 k8 S% V: M9 D U+ S7 i公仔箱論壇but i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left.... 1 b; t8 A% M; K4 \maybe there is a better one, let me see sin
actually this question always have someone asked, the calculation is very complicated, should give a no. of each ball, and first weight it in 6-6, and .... forgot...