i find one solution that is similar5 k- [- h: Q) u6 d5 z
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.... y3 k9 ]! V8 k6 Jtvb now,tvbnow,bttvbmaybe 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...