1st trial - put 6 balls at each side .. take out the lighter 6 balls, R! C2 D8 Y; v) ^; n
2nd trial - put the heavier 6 balls by 3 balls at each side
$ @ Z4 \1 |$ s( t* [" dtvb now,tvbnow,bttvblastly, take out the lighter 3 balls.... now left 3 balls..
) o# T0 w! x! ~ |/ P% x3rd trial - put 1 ball on each side, left 1 ball on table. if both sides balance, the ball on table is the heaviest. if one side on the scale is heavier then it is the heaviest... |