15 of the toughest interview questions you'll hear on Wall Street

Interviewing on Wall Street is a notoriously trying process, and job seekers often come up against questions that could send even the calmest candidate into a tailspin.

Despite how ludicrous some of these questions can be, insiders say the worst answer you could give is, "I don't know."

How do you think you would answer some of the most difficult interview questions these companies have asked candidates in the past?