i find one solution that is similar3 L3 v6 w% C6 o% ]% E% E4 _
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....5.39.217.77:8898; u0 d! @ z: I4 \# H$ b
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...