i find one solution that is similar 1 M, Q" U# |! k- e8 Bbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left..... C6 E* D5 q, h: K. |. \
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...