i find one solution that is similar ' ]/ ^$ O4 a k b [4 ^www2.tvboxnow.combut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....www2.tvboxnow.com$ [! O- b: x n9 f5 i# 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...