One card is drawn from a pack of $52$ cards. The probability that it is a queen or heart is
$\frac{1}{{26}}$
$\frac{3}{{26}}$
$\frac{4}{{13}}$
$\frac{3}{{13}}$
If ${A_1},\,{A_2},...{A_n}$ are any $n$ events, then
One card is drawn at random from a well shuffled deck of $52$ cards. In which of the following cases are the events $\mathrm{E}$ and $\mathrm{F}$ independent ?
$E:$ 'the card drawn is a spade'
$F:$ 'the card drawn is an ace'
A die is tossed thrice. Find the probability of getting an odd number at least once.
If $A$ and $B$ are two independent events, then the probability of occurrence of at least one of $\mathrm{A}$ and $\mathrm{B}$ is given by $1 -\mathrm{P}\left(\mathrm{A}^{\prime}\right) \mathrm{P}\left(\mathrm{B}^{\prime}\right)$
If $A$ and $B$ an two events such that $P\,(A \cup B) = \frac{5}{6}$,$P\,(A \cap B) = \frac{1}{3}$ and $P\,(\bar B) = \frac{1}{3},$ then $P\,(A) = $