Question

A and B are two events such that P (1)= 0.8, P(2)=0.6 and $P ( A \cap B ) = 0.5$ then the value of $P ( A / B )$ is

• A. $\frac { 5 } { 6 }$
• B. $\frac { 5 } { 8 }$
• C. $\frac { 9 } { 10 }$
• D. None of these

Answer 1

Answer: (A)

$\frac { 5 } { 6 }$

Answer 2

$P \left( \frac { A } { B } \right) = \frac { P ( A \cap B ) } { P ( B ) } = \frac { 0.5 } { 0.6 } = \frac { 5 } { 6 }$.