i find one solution that is similar5.39.217.77:8898( \6 c- A% Z! k4 Z3 U9 @
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 {6 k3 X d- W# a3 t
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...