Introduction to a Deck of Playing Cards

Q. How many non-face cards are present in a deck of $52$ cards?

Q. How many red kings are present in a standard deck of playing cards?

Q. Which of the following suits in deck of cards are black in color?

1. Heart
2. Spade
3. Diamond
4. Clubs

Q. In a pack of playing cards, what is the ratio of lettered cards to non lettered cards?

1. $9:4$
2. $4:13$
3. $4:9$
4. $13:4$