A card is drawn from a standard deck of playing cards is
.
The event is
.
The probability of P(queen) is
.
The probability of P(Club) is 
Events that are not mutually exclusive:
.
The event is mutually exclusive event.
\Then,
.
The probability of
is
(Substitute
,
and
)
(Add)
(Simplify)
The probability is
or about
.
The probability is
or about
.