1st trial - put 6 balls at each side .. take out the lighter 6 balls
8 ]" T' q7 j: `. S3 ?1 g2nd trial - put the heavier 6 balls by 3 balls at each side
4 |5 M2 D$ R, b1 v8 ilastly, take out the lighter 3 balls.... now left 3 balls..& n* A0 R, V9 [- i" U8 y- p9 H8 Q
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... |