When randomly choosing two cards from a standard deck of cards without replacement, what is the probability of choosing a queen and then a king?

1 Answer
Feb 24, 2016

Well, these events are independent of each other, so we can just find the probabilities individually, then multiply them together.

So, what is the probability of choosing a queen?

There are 4 queens out of a total of 52 cards, so it is simply #4/52#

or #1/13#

Now we find the probability of choosing a king

Remember, there is no replacement, so now we have 51 total cards because we removed a queen.

There are still 4 kings in the deck, so our probability is #4/51#

Now we found both components, just multiply them together

#1/13 * 4/51 = 4/663#

We cannot simplify further, so we are done,.