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## #1 2013-08-22 08:28:02

daga2222
Novice

Offline

### Probability Problem

I don't know much about statistics so I'm not sure how complex this problem is but:

I have a deck of 9 cards, and I have 3 favorite cards in the deck. I choose 3 cards at random from the deck. What is the probability that at least one of the 3 random cards is a favorite card?

If someone can show me how to get to the answer, it would be much appreciated. Thanks!

## #2 2013-08-22 10:04:59

bobbym

Online

### Re: Probability Problem

Hi;

The distributions in statistics are a great help in solving many probability problems.

If you are not replacing the cards then you use the hypergeometric distribution.

The probablility is 16 / 21.

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
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