Question

I pick 2 cards from a deck. What's the probability that the second card is a spade if the first card is a queen?

Answer 1

52 cards in a deck

Answer 2

Yes

Answer 3

I know, I'm just giving you numbers to put in an equation.
What we need to know is if that queen was a queen of spades or something else.

Answer 4

Anyway, the other number you'll need is the total number of spades left in the deck
13 ~right?

Answer 5

Assuming it was not a queen of spades:
51-1 = total number
13 cards left, out of the total

http://www.near-death.com/images/graphics/probabilities/08_probability_formula.jpg

http://www.near-death.com/images/graphics/probabilities/07_probability_theory.jpg

Answer 6

If you still don't get it or want to check your answer, do so.