Please explain throughly, and show your steps please and thank you

9) If you are dealing from a standard deck of cards, how many 5-card hands have: (Fully explain the reasoning/steps behind your solution and assume 52 cards with no jokers! Solutions not required) [C 5] a) All red cards? b) At most 2 red cards? c) Four cards from one suit and one card from another suit? 2 8 + + 10 9to of $ 6 black C red