Question

Suppose you draw a card from a deck of 52 cards. What is the probability that the card you draw is NOT an ace? There are 4 aces in the deck.

Answer 1

Well, if you take the aces out, how many cards are left?

Answer 2

48

Answer 3

P(Ace) = 4/52 so the probability of not an ace ( called the compliment)

P(not Ace) = 1 - P(ace)
= 1 - 4/52

Answer 4

so then the chances of not picking an ace is 48 out of 52 total cards.
now you can simplify that fraction.