# Odds in favor and probability

• Dec 11th 2009, 04:47 AM
Jman115
Odds in favor and probability
What are the odds in favor of pulling 2 spades from a 52 card deck?

I know there are 13 spades. I know the first pull has a 13/52 change of being a spade and the second pull has a 12/51 chance of being pulled.

However in order for the odds in favor I need to know the overall probability to pull 2 spades. I only know how to find the individual probability for each pull. How do I find the overall probability?
• Dec 11th 2009, 04:52 AM
e^(i*pi)
Quote:

Originally Posted by Jman115
What are the odds in favor of pulling 2 spades from a 52 card deck?

I know there are 13 spades. I know the first pull has a 13/52 change of being a spade and the second pull has a 12/51 chance of being pulled.

However in order for the odds in favor I need to know the overall probability to pull 2 spades. I only know how to find the individual probability for each pull. How do I find the overall probability?

Multiply your two (correct) individual probabilities.