A single card is drawn from a standard 52 card deck. What is the possibility that the card drawn is

A single card is drawn from a standard 52 card deck. What is the possibility that the card drawn is either a 4 or a 6

There are 4 (4's) and 4 (6's) in a standard 52 card deck.
P(4 or 6) = P(4) + P(6)
P(4 or 6) = 4/52 + 4/52
P(4 or 6) = 8/52

We can simplify this fraction by typing it in our search engine and choosing simplify:
P(4 or 6) = 2/13