Disney's interview process was the most thorough I've been through. It's about a day process that consists of five interviews, each lasting 30 to 60 minutes. There are one to three people in each interview who ask a variety of questions that usually relate to their respective departments, as well as personality-related questions to ensure you would be a good fit. If, at any point along the way, one person says no, then the applicant does not receive an offer.

You begin by opening every locker.

Then you close every second locker.

Then you go to every third locker and toggle it (open if closed, close if open).

Continue toggling every nth locker on pass number n. After 100 passes, where you toggle only locker #100, how many lockers are open?