i find one solution that is similar/ T% x7 d: @0 u- r) |" M3 E
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.... ' X, L* V) Q5 B! p" Q6 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...