52 cards, 4 ones
Its one of those cards, that you can only have one per deck.
one
Just one. After that you no longer have a card deck.
There are 53 cards in a deck with one joker, or 54 in a deck with 2 jokers. There are 63 cards in an Australian 500 deck with one Joker.
One 5 of diamonds in a deck of cards
In a standard deck of cards there is one and only one ace of diamonds.
There is one King of Diamonds in a deck of cards, unless it is a "specialty" deck.
Assuming you mean how many fours in a deck of playing cards, a standard deck has four. One heart, diamond, spade, clubs/
There is one of each card in a standard 52-card deck.
one.
There is one.
How many 2 of hearts are in a deck of cards? Is that the question? If it is then the answer is 1. There is only one 2 of hearts in a deck of cards. If your question is how many hearts are in 2 decks of cards then the answer is 26 as there are 13 hearts in each deck.