1st trial - put 6 balls at each side .. take out the lighter 6 balls
3 Y+ j. i; V, ktvb now,tvbnow,bttvb2nd trial - put the heavier 6 balls by 3 balls at each side
, n( o0 o& D1 ^$ Jlastly, take out the lighter 3 balls.... now left 3 balls..
* F j7 `/ }" R+ h公仔箱論壇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... |