1st trial - put 6 balls at each side .. take out the lighter 6 balls
3 W. \* y2 [! H公仔箱論壇2nd trial - put the heavier 6 balls by 3 balls at each side
) a1 I ]& r6 \" t. z9 M# |lastly, take out the lighter 3 balls.... now left 3 balls..
2 a4 c$ Z3 i+ Z! z- L% vtvb now,tvbnow,bttvb3rd 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... |