Question

two cards were drawn, without replacement, from a pack of 52 cards. what is the probability that they are both kings or both queens?

Answer 1

When you want the probability of several events all occurring, you can multiply conditional probabilities. In this case the probability the first draw is an Ace multiplied by the conditional probability, given this event, that the second is an Ace. I won't do that one for you--you need to do some work, I'll calculate the probability that two cards are both red tens. That is 2/52 * 1/51.