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Question: If A and B are two events such that P (1) = \(\frac { 3 } { 8 }\), P (2) = \(\frac { 35 } { 324 }\)...

If A and B are two events such that P (1) = 38\frac { 3 } { 8 }, P (2) = 35324\frac { 35 } { 324 } and P(A ČB) = 34\frac { 3 } { 4 }, then P (BA)\left( \frac { B } { A } \right) =

A

25\frac { 2 } { 5 }

B

23\frac { 2 } { 3 }

C

35\frac { 3 } { 5 }

D

None of these

Answer

25\frac { 2 } { 5 }

Explanation

Solution

PP(A)+P(B)−P(A∪B)P(A)\frac { \mathrm { P } ( \mathrm { A } ) + \mathrm { P } ( \mathrm { B } ) - \mathrm { P } ( \mathrm { A } \cup \mathrm { B } ) } { \mathrm { P } ( \mathrm { A } ) }