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If A and B are any two events such that `P(A)+P(B)-P( A "and" B)=P(A)`, then:

A

`P(B//A)=1`

B

`P(A//B)=1`

C

`P(B//A)=0`

D

`P(A//B)=0`

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The correct Answer is:
B
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