Question

a

Answer 1

the first solution is correct , but b is number of black not red*
you have 26 red cards and 26 black cards in the deck and you are choosing 5 cards from all them, you want the probability that you choose 3 black cards and 2 red cards.

Answer 2

any time! :)

Answer 3

yeah it would be right if that was the question

Answer 4

well it's nearly morning here lol
have a good evening :)