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Multiple Choice Questions

A committee of 4 is to be formed from among 4 girls and 5 boys What is the probability that the comm...........

Quantitative Aptitude ( CCS) Probability
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    A committee of 4 is to be formed from among 4 girls and 5 boys. What is the probability that the committee will have number of boys less than number of girls?

    2/3

    Incorrect Answer

    1/6

    Correct Answer

    2/7

    Incorrect Answer

    4/7

    Incorrect Answer
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    Explanation:

    ways 4 girls and 0 boys
    =4C4/9C4
    ways 3 girls and 1 boy
    =4C3*5C1/9C4
    Total probability = 4C4/9C4 + 4C3*5C1/9C4
    =1/126+ 20/126=21/126=1/6

    Hence, option 2 is the correct answer.

    By: Amit Kumar
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