1. divide 6 and 6, both sides will not equaltvb now,tvbnow,bttvb$ T- u: |: |/ V" p5 A9 l
2. take any side of the 6, divide then 3 and 3, again both sides will not equal { Z# C4 c6 _
3. take any 2 and weigh them* H4 w' ^# {4 @% z# z) u
if they equal, the one left is the ball.