1st trial - put 6 balls at each side .. take out the lighter 6 balls7 L% B, A W F; O
2nd trial - put the heavier 6 balls by 3 balls at each side: C- L9 D5 H4 L0 Q; ]
lastly, take out the lighter 3 balls.... now left 3 balls..; }) r" B" v+ `
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... |