1st trial - put 6 balls at each side .. take out the lighter 6 balls公仔箱論壇' _8 W8 y6 j8 ~' H
2nd trial - put the heavier 6 balls by 3 balls at each side
3 F# |# U6 t% t# Elastly, take out the lighter 3 balls.... now left 3 balls..
r8 C# F7 R: R% X8 t1 H* xtvb 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... |