1st trial - put 6 balls at each side .. take out the lighter 6 balls
0 p9 V3 m {* W; X: I/ r$ {5 C0 M公仔箱論壇2nd trial - put the heavier 6 balls by 3 balls at each sidetvb now,tvbnow,bttvb- L* ?4 m4 U- h# A: y4 T/ a
lastly, take out the lighter 3 balls.... now left 3 balls..
# p+ Q% U" m7 p& b9 l1 S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... |