Art of Problem Solving

Odds: Difference between revisions

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Odds is simply a different version of [http://www.artofproblemsolving.com/Wiki/index.php/Probability probability]. To calculate the odds, first find the probability of it, say <math>\frac{n}{r}</math> subtract the [http://www.artofproblemsolving.com/Wiki/index.php/Numerator numerator] from the [http://www.artofproblemsolving.com/Wiki/index.php/Denominator denominator], thus giving <math>\frac{n}{n-r}</math>.


==Some Simple Problems Involving Odds==
What is the odds of getting rolling a six on a standard die?
Solution:
The probability of rolling a six on a die is <math>\frac{1}{6}</math>. This makes the odds <math>\frac{1}{6-1}=\frac{1}{5}</math>

Revision as of 19:20, 8 November 2007

Odds is simply a different version of probability. To calculate the odds, first find the probability of it, say $\frac{n}{r}$ subtract the numerator from the denominator, thus giving $\frac{n}{n-r}$.

Some Simple Problems Involving Odds

What is the odds of getting rolling a six on a standard die?

Solution: The probability of rolling a six on a die is $\frac{1}{6}$. This makes the odds $\frac{1}{6-1}=\frac{1}{5}$