What's your favorite interview question?

Hey all!

I'm studying up for a senior software engineer interview and I was wondering if you could tell me your favorite interview question to help me prepare.

Here's mine:

Name 10 namespaces under the System namespace in .NET.

jk 😁

It's this:

Tell me about a time that you failed, and what you learned from it.

Technical and non-technical questions welcome 🙂