1st trial - put 6 balls at each side .. take out the lighter 6 balls
/ q3 a. F& \. mtvb now,tvbnow,bttvb2nd trial - put the heavier 6 balls by 3 balls at each sideos.tvboxnow.com5 t+ w4 a! H" q( T0 ^/ w+ Y
lastly, take out the lighter 3 balls.... now left 3 balls..公仔箱論壇1 {& g5 ]' k6 a, K. Q0 x6 u: y
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... |