Most Americans don't know the basics when it comes to money.
When economists Annamaria Lusardi and Olivia Mitchell conducted a three-question survey to see how much people really know about compound interest, inflation and stock risk, the results weren't great: Only 30 percent of respondents answered all three questions correctly.
"Financial literacy should not be taken for granted," Lusardi tells Stephen Dubner on a recent Freakonomics podcast. "Actually, if you ask me, we are at a crisis level."
Here are the three survey questions: