Q. 17.     If A and B are two events such that P(A\neq 0) andP(B\mid A)=1, then

                Choose the correct answer of the following:

                (A)  A\subset B

                (B)  B\subset A

                (C)  B=\phi

                (D)  A=\phi

Answers (1)
S seema garhwal

A and B are two events such that P(A\neq 0) andP(B\mid A)=1,

                     P(B|A)=\frac{P(B\cap A)}{P(A)}

                                 1=\frac{P(B\cap A)}{P(A)}

                            P(B\cap A)=P(A)

           \Rightarrow \, \, \, A\subset B

Option A is correct.

 

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