1st trial - put 6 balls at each side .. take out the lighter 6 balls
6 W( q* Q) m) ^5.39.217.772nd trial - put the heavier 6 balls by 3 balls at each side2 c- X. [- ~" M: K
lastly, take out the lighter 3 balls.... now left 3 balls..5.39.217.77. o% J; t- q! v$ N4 G
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... |