There are 52 cards in a playing deck.
52
There are 52 cards in a normal deck of playing cards, not counting the Jokers and advertisements.
13
13
13
In a standard deck of playing cards, a straight requires 5 cards.
In a standard deck of playing cards, you need 5 cards to form a straight.
In a standard deck of playing cards, there are 26 red cards.
52 cards are in a standard deck.
The are 52 cards in a playing deck.
14, but 15 if you count the jokers