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Frage im Vorstellungsgespräch

Quality Assurance Engineer-Vorstellungsgespräch Berlin

You have nine balls of which one is slightly lighter that

  the others, which are all the same weight. You have an old style pair of scales. How can you find out in two moves which one the light ball is
Antwort

Antwort im Vorstellungsgespräch

2 Antworten

1

Put three balls on either side of the scale. one of things will happen:
  -- they are the same weight, which mean the lighter ball is in the group not on the scales.
     -- in this case, the lighter ball is in the group of balls not on the scales, in this case:
     -- take all the balls off, put one ball of the group with the lighter ball on either side of the scales.
          two result could occur:
          -- one side is lighter, containing the lighter ball
          -- both ball are the same weight, which means the light ball is the one of the group not on the
              scales
  -- one side is lighter because it contains the lighter ball, in this case:
      -- take all the balls of, put one ball of the group with the lighter ball on either side of the scales.
          two result could occur:
          -- one side is lighter, containing the lighter ball
          -- both ball are the same weight, which means the light ball is the one of the group not on the
              scales

Bewerber im Vorstellungsgespräch am 28.10.2015
0

First separate 3 balls from 9 bolls then divided 6 balls and Put 3 balls on either side of the scale
A- If they are the same weight which mean the lighter ball is in the group not on the scales.
We should from 3balls the first separated again separate1 balls and Put 2 balls on either side of the scale if they are same weigh the ball we separated is lighter or one side is lighter, containing the lighter ball
B- If they are not the same weight take 3balls are lighter separate1 balls and Put 2 balls on either side of the scale if they are same weigh the ball we separated is lighter or one side is lighter, containing the lighter ball

Farzaneh Hosseini am 30.11.2018

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