Multiple Choice Questions on Let P E denote the probability of the event E Given P A 1 P B frac12 the values of P A B a........... for NDA Exam Preparation

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Multiple Choice Questions

Let P E denote the probability of the event E Given P A 1 P B frac12 the values of P A B a...........

Mathematics (NDA) Probability
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    Let P(E )  denote the probability of the event E.Given P(A)=1,P(B)=½ ,the values of P(A/B)  and P(B/A)  respectively are?

    1 , 1/2

    Correct Answer

    1, 1/3

    Incorrect Answer

    1 , 1/5

    Incorrect Answer

    1 , 1/7

    Incorrect Answer
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    Explanation:

    P(A)=1

    P(B)=1/2

    Both events are independent

    So,   P(A intersection B)=P(A).P(B)

    =1. ½=1/2

    P(A|B)=P(A intersection B)/P(B)  =1/2 /1/2

    =1

    P(B|A)=P(A intersection B)/P(A)  =1/2/1

    =1/2

    By: bhavesh kumar singh
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