1st trial - put 6 balls at each side .. take out the lighter 6 balls" m0 _) V- x0 Q. W
2nd trial - put the heavier 6 balls by 3 balls at each side1 j2 \, T" \0 D- w7 V" Q% K
lastly, take out the lighter 3 balls.... now left 3 balls..
9 w& N6 b5 q% Q6 q' |2 Q, i9 D# _4 I3rd 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... |