Multiple Choice Questions on Out of 15 students studying in a class 7 are from Maharashtra 5 from Karnataka and 3 from Goa Four s........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

Out of 15 students studying in a class 7 are from Maharashtra 5 from Karnataka and 3 from Goa Four s...........

Quantitative Aptitude ( CCS) Probability
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    Out of 15 students studying in a class, 7 are from Maharashtra, 5 from Karnataka and 3 from Goa. Four students are to be selected at random. What are the chances that at least one is from Karnataka?

    10/13

    Incorrect Answer

    11/13

    Correct Answer

    12/13

    Incorrect Answer

    1/13

    Incorrect Answer
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    Explanation:

    P (Atleast 1 from Karnataka) = 1 - P (No one from Karnataka) 

    = 1 - 10C4/15C4 = 1 - 2/13 = 11/13

    By: Deepak Dawra
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