i find one solution that is similar 3 Z, H! s7 P% R- A7 v3 X( \. ebut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left.... ) [6 S1 O5 _% L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...