1. divide 6 and 6, both sides will not equal! x* R# q1 \ s1 c# {+ U2 s/ _
2. take any side of the 6, divide then 3 and 3, again both sides will not equal 1 B R5 V- n9 {$ F5 U# R公仔箱論壇3. take any 2 and weigh them公仔箱論壇- {5 T3 l% U1 B- T* U
if they equal, the one left is the ball.