1. divide 6 and 6, both sides will not equal " ~. t8 C0 g0 |) K2. take any side of the 6, divide then 3 and 3, again both sides will not equal + x3 |2 s+ L! N8 t+ K# \3. take any 2 and weigh them + v- e+ H( z% D' U+ `3 I- t9 z公仔箱論壇if they equal, the one left is the ball.