1st trial - put 6 balls at each side .. take out the lighter 6 balls
5 E0 m& P4 O& }, u {. W Z2nd trial - put the heavier 6 balls by 3 balls at each side8 b @5 i( R. s$ Q' [8 p
lastly, take out the lighter 3 balls.... now left 3 balls..
; B9 D% H4 {* v, }$ d公仔箱論壇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... |