i find one solution that is similar公仔箱論壇* h7 D( f$ o$ \. z( ]; ]& f- c
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....( C$ w2 ~+ m( Z; S, j% d8 V
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...