i find one solution that is similar* ] t: i8 O- o2 X$ q! K+ _9 _
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....公仔箱論壇% e/ Y5 G$ L; s
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...