i find one solution that is similar 7 e. _! U/ _8 ?7 e# rbut i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left.... $ T6 A8 u" X" ?. X, X, Qmaybe 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...