Multiple Choice Questions on The probability of occurrence of two events A and B are 1 5 and 1 3 resp the probability of their si........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The probability of occurrence of two events A and B are 1 5 and 1 3 resp the probability of their si...........

Quantitative Aptitude ( CCS) Probability
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    The probability of occurrence of two events A and B are 1/5 and 1/3 resp. the probability of their simultaneous occurrence is 6/35. find the probability that either A or B must occur.

    44/110

    Incorrect Answer

    52/105

    Incorrect Answer

    49/120

    Incorrect Answer

    38/105

    Correct Answer
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    Explanation:

    P(A) = 1/5 , P(B) = 1/3, P(Both A and B)=6/35
    Then P(A or B)= P(A)+ P(B)- P(Both A and B)
    =1/5+1/3-6/35=38/105.

    Hence, option 4 is the correct answer.

    By: Amit Kumar
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