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Logic Amazon Aptitude Interview Puzzle

Logic Amazon Aptitude Interview Puzzle - 8 March

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same color?

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  1. 13. The first 12 balls could be 3 red, 3 blue, 3 green, 3 yellow, at which point the 13th will give you 4 the same.

  2. Replies
    1. Bharath Ganji,Rack your brains.How could be sure that your first four choices would be correctly the balls of same colour?

    2. Bharath Ganji rock...............

    3. Because it doesn't say you can't look at the balls

  3. 4 because it says minimum no. of balls not maximum