Answer requires justification

In the game of poker a player receives a subset of 5 cards, called a poker hand, fromthe standard deck of 52 cards. The order in which the cards are received is not important,just the actual cards themselves.

(a) How many poker hands contain 5 hearts?

(b) How many poker hands contain exactly 3 hearts?

(c) How many poker hands contain 2 clubs and 3 spades?

(d) How many poker hands contain exactly two suits