jexmand

1st trial - put 6 balls at each side .. take out the lighter 6 balls
. M0 B- C$ u. E2 g/ y3 T: H公仔箱論壇2nd trial - put the heavier 6 balls by 3 balls at each side4 Z9 u" C, H) V; y3 ~1 s
lastly, take out the lighter 3 balls.... now left 3 balls..公仔箱論壇( E+ P0 `: v: I  B, [/ [
3rd 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...