Answer
$\frac{1}{4}$
Work Step by Step
In a standard deck of $52$ cards, there are exactly $13$ spade cards.
To find the probability of a spade being chosen at random from the deck, we can use the formula $P=\frac{n}{s}$
$n = 13$ and $s= 52$.
So, $P=\frac{n}{s}$
$P=\frac{13}{52}$
$P=\frac{1}{4}$