Two cards are drawn without replacement from the ordinary
deck, find the probability that the second is not a face
card given that the first is a face card.
A deck of 52 cards contains 12 face cards, and 40 non-face
cards.
A♥ 2♥ 3♥ 4♥ 5♥ 6♥ 7♥ 8♥ 9♥ 10♥ J♥ Q♥ K♥
A♦ 2♦ 3♦ 4♦ 5♦ 6♦ 7♦ 8♦ 9♦ 10♦ J♦ Q♦ K♦
A♠ 2♠ 3♠ 4♠ 5♠ 6♠ 7♠ 8♠ 9♠ 10♠ J♠ Q♠ K♠
A♣ 2♣ 3♣ 4♣ 5♣ 6♣ 7♣ 8♣ 9♣ 10♣ J♣ Q♣ K♣
Since we are given that the first card has been drawn and it was a
face card and we are not going to replace it before drawing a second
card, then
we have a 51-card deck with only 11 face cards and still 40 non-face
cards.
So the probability is 40 ways out of 51.
Answer 40/51
Edwin