1. divide 6 and 6, both sides will not equal& Y3 w: o5 ?0 e1 ]" U4 ^& Q
2. take any side of the 6, divide then 3 and 3, again both sides will not equaltvb now,tvbnow,bttvb# [$ |' q7 s% `& ?% W
3. take any 2 and weigh them" j6 W+ i& k9 M
if they equal, the one left is the ball.