Three Boxes Problem

There are three boxes. One box contains $100. The other two boxes are empty.

Instructions:

1. You are to select one of the three boxes

2. After you have made your selection, an empty box will be revealed to you.

3. You can change your selection to the other unopen box at a cost of $1.

A note of thanks to Natalia Heng for the development of this online class material.