1. divide 6 and 6, both sides will not equal) \' D; a3 Z9 ]' y
2. take any side of the 6, divide then 3 and 3, again both sides will not equal0 z L# h+ v& A/ G
3. take any 2 and weigh them3 y7 ?, W0 S3 m; J0 E6 t9 g
if they equal, the one left is the ball.