i find one solution that is similar L+ o( ]) R# D W( gbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left.... / w( O- S2 k$ Q6 G+ K* D% pmaybe 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...