1st trial - put 6 balls at each side .. take out the lighter 6 balls公仔箱論壇( l0 {, ^$ B7 ]: a K+ A" Y7 X
2nd trial - put the heavier 6 balls by 3 balls at each side( I; J6 A6 A/ ~: w' T) C; F
lastly, take out the lighter 3 balls.... now left 3 balls..os.tvboxnow.com8 u/ a( {1 ~ M+ s5 W
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... |