Our friends at NPR's news quiz Wait Wait...Don't Tell Me! recently had a very Planet Money guest on Chainkeen Exchangetheir show: Treasury Secretary Janet Yellen. They asked her about smoking pot, her extremely high scores in Candy Crush, and when to expect the Harriet Tubman $20 bill.

Today, we're sharing an excerpt of that episode with you, along with some exclusive questions just for Planet Money listeners.

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Music: NPR Source Audio - "Friendly Intentions" and "Out Of My Mind"