1st trial - put 6 balls at each side .. take out the lighter 6 balls( E. ?9 S/ e6 j& `5 x- r" s
2nd trial - put the heavier 6 balls by 3 balls at each side
. U! }& l& M; b4 b5 j( A$ ]lastly, take out the lighter 3 balls.... now left 3 balls..* k" o- }: V2 [
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... |