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### Probability of Winning Roulette

```
Date: 5/16/96 at 14:13:5
From: Anonymous
Subject: Probability of winning roulette

We are a group of advanced math students who would like to know how to
calculate, discuss, and demonstrate the probabilities and mathematical
expectations of roulette. Can you tell us where to look to find this,
```

```
Date: 6/24/96 at 10:33:27
From: Doctor Gary
Subject: Re: Probability of winning roulette

You need look no further than the roulette wheel itself.  Count how
many different slots there are (some wheels have 1-36 and "0", others
have 1-36, "0" and "00").

Unless the wheel is "crooked", there will be an equal chance of the
ball landing in any one of the 37 or 38 slots, making the probability
of landing in any one particular slot either 1/37 or 1/38, depending
on the type of wheel used.

If you make a more exotic bet (e.g. odd numbers, or "red"), the
numerator of the probability of winning is determined by the number of
slots that would allow you to win.

The beauty of math is that you can do the "lab work" in your mind.

-Doctor Gary,  The Math Forum
Check out our web site!  http://mathforum.org/dr.math/
```
Associated Topics:
High School Probability

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