Question

A card is draw from a well-shuffled pack of 52 cards. What is the probability that a card will be a king?

Answer 1

Number of king in the pack of cards $=4$, one of each suits.

Thus $n\left(E\right)=4$ and $n\left(S\right)=52$

So required probability $=\frac{n\left(E\right)}{n\left(S\right)}=\frac{4}{52}=\frac{1}{13}$