1. divide 6 and 6, both sides will not equal/ z1 E! A' j% K
2. take any side of the 6, divide then 3 and 3, again both sides will not equaltvb now,tvbnow,bttvb4 y* u0 V0 c1 d( N6 `" C
3. take any 2 and weigh them / k* n" h) Z! w) T. w7 pif they equal, the one left is the ball.