1st trial - put 6 balls at each side .. take out the lighter 6 balls
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lastly, take out the lighter 3 balls.... now left 3 balls..tvb now,tvbnow,bttvb5 P* Q* S* }- _) ?: {, |$ ^ I" r3 k
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... |