1st trial - put 6 balls at each side .. take out the lighter 6 balls
& A! c4 {8 n: t: G" w2 H& g, _tvb now,tvbnow,bttvb2nd trial - put the heavier 6 balls by 3 balls at each side
/ s' J2 x, k5 J( z; elastly, take out the lighter 3 balls.... now left 3 balls..
9 @6 D( d' @+ R! Z; C+ v% p3rd 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... |