1. divide 6 and 6, both sides will not equal ! v- p+ a6 [% |6 e" L3 x公仔箱論壇2. take any side of the 6, divide then 3 and 3, again both sides will not equal* z& D( L" }# ?2 z- r
3. take any 2 and weigh themtvb now,tvbnow,bttvb1 o v) n* R* L% W1 v# g
if they equal, the one left is the ball.