i find one solution that is similar # S6 O( }; v9 E5 A' K5.39.217.77but i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left.... & ^+ W4 h, F2 Y* j5 N! s; Q公仔箱論壇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...