1st trial - put 6 balls at each side .. take out the lighter 6 balls
2 o9 L8 A/ T6 S公仔箱論壇2nd trial - put the heavier 6 balls by 3 balls at each side
7 `7 f# b T# q# r4 ]lastly, take out the lighter 3 balls.... now left 3 balls..
4 u% R& x" `, d o* U% x. d$ D- B3rd 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... |