i find one solution that is similar . B9 r+ I: `. M, Mbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....* T! C) J5 E* |9 W) ?
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...