Skip to content # Winning the Lottery, An Expected Value Mystery

## Activity Guide

# This guide looks at the activity in detail and goes into the underlying math.

LastName, FN. (2020). ActivityName. In S. Bowen (Ed.), Math Circle Activity Database. American Institute of Mathematics. https://mathcircles.org/activity/

Contributor(s): Michelle Manes

Math Circles: Math Teachers’ Circle of Hawai’i (MaTCH)

- Activity Description
- Topics Covered
- Session Styles
- Mathematical Practices

In 2005, while researching the expected value for lottery tickets in various states, a group of MIT students won millions of dollars in the Massachusetts $2 Cash Winfall drawing. Do you want to know how they did it? This teacher led activity starts with a lottery, explores expected value, and finally ties into finite projective geometries.