"I don't know what this means."

Let's say that you want to store a lot of data, and digit wheels cost \$1\. At that price, an object that can store 3 different values costs about 48¢, whereas an object that stores 4 different values costs about 60¢\. What storage medium, then, costs exactly 50¢? I can think of two:

I don't know what this means.