Let A and B be two independent events such that P(A) = ${1 \over 3}$ and P(B) = ${1 \over 6}$. Then, which of the following is TRUE?

Question

Let A and B be two independent events such that
P(A) = ${1 \over 3}$ and P(B) = ${1 \over 6}$.
Then, which of the following is TRUE?

$P\left( {{A \over {A \cup B}}} \right) = {1 \over 4}$

$P\left( {{A \over B}} \right) = {2 \over 3}$

$P\left( {{{A'} \over {B'}}} \right) = {1 \over 3}$

$P\left( {{A \over {B'}}} \right) = {1 \over 3}$

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