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If A and B are two events such that: P(A...

If A and B are two events such that: `P(A)=7/(13)` , `P(B)=9/(13)` and `P(AnnB)=4/(13)` , find `P( A //B)` .

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`P(A)= 7/13`
`P(B)= 9/13`
`P(A nn B) = 4/13`
`P(A|B)= (P (A nn B))/(P(B))`
`= (4/13)/(9/13)`
`=4/9`
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