The answer depends on how many cards are drawn.
4 7's
In a standard deck of 52 cards, there are 13 clubs and 1 seven of hearts. The probability of drawing a club or the seven of hearts, then, is 14 in 52, or 7 in 26.
If the cards are all different then there are 13C7 = 1716 different hands.
Of the 52 cards, there are an equal number of each of the 4 suits (Clubs, Spades, Diamonds and Hearts) so there are 52/4 = 13 of each suit. In each suit there is an A, 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K = 13 cards Out of the 13 Diamond cards, there is only one which is a 3. So there is only one 3 of diamonds in a standard deck of 52
There is only one of each individual card in a deck. While there are 13 cards of the heart suit, and 4 cards that have a value of seven out of the entire deck, only ONE card is a seven of hearts.
2
There are 4 sevens in a deck of 52 cards.
There are 4 9s in a deck of 52 (one of each suit: clubs, diamond, spade and hearts)
7
1
The answer depends on how many cards are drawn.
4 7's
2
There is only one 7 of hearts in a standard deck of 52 cards. Each card in a deck is unique and appears only once, so there is only one 7 of hearts among the 52 cards.
56 usually in the box 13 clubs 13 hearts 13 spades 13 diamonds (52 cards) 2 Jokers usually two advert cards making 56 in total, this is because they are printed as a whole pack on a large sheet for example 7 x 8 cards on a sheet makes 56.
In one deck of 52 cards you will find just one six of hearts.