i find one solution that is similar ^0 Z3 s7 W8 P6 e) V
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....+ Y0 Z: X4 C8 ]4 I/ H5 Q
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...