i find one solution that is similar " J5 b) j& @" Q; N% m D/ U$ lbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left.... / c: W u* o) i G5 v5 umaybe 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...