maaaary

1. divide 6 and 6, both sides will not equal) p( S1 T) }- c; W+ i5 Z3 l
2. take any side of the 6, divide then 3 and 3, again both sides will not equaltvb now,tvbnow,bttvb9 J1 }# r" P% m) b6 [9 z$ g  [* D
3. take any 2 and weigh them& T3 t5 Y1 {% b6 b2 \7 X
if they equal, the one left is the ball.