i find one solution that is similar % d, l1 Z! D; ^- t! ~2 q: e ?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....4 h- y+ Z3 D( ], \3 V
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...