Multiple Choice Questions on A bag contains 20 balls 8 balls are green 7 are white and 5 are red What is Hie minimum number of ba........... for Civil Services Exam (CSAT) Preparation

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    A bag contains 20 balls. 8 balls are green, 7 are white and 5 are red. What is Hie minimum number of balls that must be picked up from the bag blindfolded (without replacing any of it) to be assured of picking at least one ball of each colour?

    This questions was previously asked in
    Complete-Test, Previous year (2017)

    17

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    16

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    13

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    11

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    Explanation:


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