Multiple Choice Questions on A basket contains 5 black and 8 yellow balls Four balls are drawn at random and not replaced What is........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A basket contains 5 black and 8 yellow balls Four balls are drawn at random and not replaced What is...........

Quantitative Aptitude ( CCS) Probability
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    A basket contains 5 black and 8 yellow balls. Four balls are drawn at random and not replaced. What is the probability that they are of different colours alternatively?

    56/429

    Correct Answer

    57/429

    Incorrect Answer

    61/429

    Incorrect Answer

    68/429

    Incorrect Answer
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    Explanation:

    Answer – 56/429 
    Explanation :
    sol=> BYBY + YBYB = (5/13)*(8/12)*(4/11)*(7/10) + (8/13)*(5/12)*(7/11)*(4/10) = 56/429

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