i find one solution that is similar * @7 W% s4 r/ m( E0 U( g5.39.217.77but i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....& s& O; J6 q- J; k# \/ I5 ?' @; 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...