1st trial - put 6 balls at each side .. take out the lighter 6 balls公仔箱論壇. L' j6 o d2 H# G, R$ o! x
2nd trial - put the heavier 6 balls by 3 balls at each sidetvb now,tvbnow,bttvb+ z7 F! Y# N: V' t7 H( ~" H
lastly, take out the lighter 3 balls.... now left 3 balls..
0 T! @- O2 J9 A' G9 S1 X! c" U3rd 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... |