1st trial - put 6 balls at each side .. take out the lighter 6 balls5.39.217.77:8898* s7 r& `0 L0 N* B( j
2nd trial - put the heavier 6 balls by 3 balls at each side
9 @# h/ D2 _4 {% \6 }5.39.217.77:8898lastly, take out the lighter 3 balls.... now left 3 balls..公仔箱論壇& k6 ^) Z2 a! q3 f" j
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... |