$\"\"$

\

A card is drawn from a standard deck of playing cards is $\"\"$ .

\

The event is $\"\"$ .

\

The probability of $\"\"$ is $\"\"$ .

\

The probability of $\"\"$ is $\"\"$ .

\

The event is mutually exclusive event.

\

Then, $\"\"$ .

\

Events that are not mutually exclusive: $\"\"$ .

\

The probability of $\"\"$ :

\

Substitute $\"\"$ , $\"\"$ and $\"\"$ .

\

$\"\"$

\

$\"\"$ (Add)

\

$\"\"$ (Simplify)

\

The probability is $\"\"$ or about $\"\"$ . $\"\"$

\

Mutually exclusive;the probability is $\"\"$ or about $\"\"$ .