A deck of cards is well-shuffled. One card is then picked up at random. What is the probability that the card is the queen?

The correct answer is $\frac{1}{13}$

A deck of cards contains 52 cards.
Number of possible outcomes = 52
Number of queens in a deck = 4
Number of favourable outcomes where a queen will be drawn = 4
∴ Probability of drawing a queen = P(E) = $\frac{4}{52}$ = $\frac{1}{13}$