i find one solution that is similar & p0 ?& u' i# A$ @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.... 8 p- N9 {, E2 x3 Q; I$ ?, F" Jmaybe 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...