But don’t just say “I don’t know” when you are stumped. You want to communicate that you are engaged and are eager to find out and learn. Saying something like, “I don’t know that yet, but I’m willing ...

A CEO has said he shows a brain teaser to candidates in interviews and give them three seconds to answer correctly.

Tech giants are the hardest companies to interview for, but tough questions show up across industries, according to employees ...