1. divide 6 and 6, both sides will not equal5.39.217.77* K; b' n1 P! k$ T
2. take any side of the 6, divide then 3 and 3, again both sides will not equaltvb now,tvbnow,bttvb1 P( Q1 N9 E9 v7 |7 M" G. P+ O
3. take any 2 and weigh themtvb now,tvbnow,bttvb9 r& z, B* X2 @7 a' u$ f
if they equal, the one left is the ball.