1. divide 6 and 6, both sides will not equal % f# q( `+ f7 i) |: @2. take any side of the 6, divide then 3 and 3, again both sides will not equal$ ?9 f4 L4 M. K' n! @: G& e
3. take any 2 and weigh them5 ^6 v; F' m* U+ _: l# t: E& A
if they equal, the one left is the ball.