1. divide 6 and 6, both sides will not equal % P- K3 A* s4 h% s8 s! ^: Y2. take any side of the 6, divide then 3 and 3, again both sides will not equal公仔箱論壇& w' z2 N8 N# _2 ^; E: o5 S2 [# }& u. I
3. take any 2 and weigh them% `/ ^2 f, H6 H; T
if they equal, the one left is the ball.