1. divide 6 and 6, both sides will not equal # F( @# P- V2 \6 H5 V公仔箱論壇2. take any side of the 6, divide then 3 and 3, again both sides will not equal & H8 o2 @* F( B. P" F6 o. N3. take any 2 and weigh them4 {. e! Z, `: z2 d& \9 N' A4 e& t: X
if they equal, the one left is the ball.