i find one solution that is similar公仔箱論壇/ d5 }$ N B; m% R# m+ p
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....; x; a* K H5 i q4 Z3 d7 Q9 d
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...