5. What is the probability of not selecting a Heart if one card is drawn from a standard 52 card deck?
There are four different types of cards like that in a deck: Heart, Club, Spade, and Diamond. There is an equal number of each of these.
prob of drawing a heart from 52 cards = 13/52 = 1/4
So the prob of NOT drawing a heart is 1 - 1/4 = 3/4