i find one solution that is similar公仔箱論壇9 e+ I: T9 V+ p7 I# _7 L2 q
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....9 R4 H/ }9 Z# ^' d( 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...