Question

In a well-shuffled, standard 52 card deck, what is the probability that a card is a Queen, given that it is a black card

Answer 1

2/52

Explanation:

Answer 2

There are two black queens in a standard deck, so the probability is 2/52 or 1/26.

If instead you know you pulled a black card from the deck and you’re wondering what the probably is that it’s a queen, then it’s 2/26, since there are still 2 black queens, but only 26 black cards.