1. divide 6 and 6, both sides will not equal/ a' j/ u) E) W& I& a0 d) u
2. take any side of the 6, divide then 3 and 3, again both sides will not equal. a* k/ L# C: c0 o# z0 [& [
3. take any 2 and weigh them: Z- n" S& {* X$ M7 |( {
if they equal, the one left is the ball.