24 of the toughest interview questions heard at Facebook

Facebook has often been regarded as one of the best places to work in the tech industry.

Its interns make $25,000 more than the average citizen. And famously, employees on Glassdoor voted Facebook the No. 1 company to work for overall.

But in order to get a job there, you’ll have to answer some tricky questions first.

We’ve compiled some of the toughest Facebook interview questions available on Glassdoor. Whether you’re looking for a programming job or a position doing marketing, Facebook’s interview questions will give you a run for your money.

“There is a building with 100 floors. You are given 2 identical eggs. How do you use 2 eggs to find the threshold floor, where the egg will definitely break from any floor above floor N, including floor N itself.” – Data Scientist candidate

“If you were going to redesign an ATM machine, how would you do it?” – Product Designer candidate

“How many birthday posts occur on Facebook on a given day?” – Data Scientist candidate

“How much do you charge to wash every window in Seattle?” – Online Sales operations candidate

“What would you do on day 1 here?” – Technology Partner candidate

“Describe how the website works. (That’s the whole question , with no context.)” – Technical Project Manager candidate

“You have two lightbulbs and a 100-story building. You want to find the floor at which the bulbs will break when dropped. Find the floor using the least number of drops.” – Software Engineer candidate

“How many vacuums are there in the USA?” – Risk Analyst candidate

“What options do you have, nefarious or otherwise, to stop people on a wireless network you are also on (but have no admin rights to) from hogging bandwidth by streaming videos?” – Production Engineer candidate

“Tell me your plan of action if you saw that photo uploads suddenly dropped by 50%.” – Operations Associate User Intelligence candidate

“A Russian gangster kidnaps you. He puts two bullets in consecutive order in an empty six-round revolver, spins it, points it at your head and shoots. *click* You’re still alive. He then asks you, do you want me to spin it again and fire or pull the trigger again. For each option, what is the probability that you’ll be shot?” – Internet Marketing Analyst candidate

“Should Facebook continue to add features or rely on 3rd party apps?” – Product Designer candidate

“I was asked what I was least proud of on my resume.” – Media Solutions Specialist candidate

“Given access to all the data Facebook collects, what would you do with it?” – Product Analytics candidate

“Pre-IPO, they asked me to write a paper on the valuation of Facebook. They also asked me what I thought the greatest technological advancement was in the past 20 years.” – Software Engineer candidate

“If you have 100 credit card numbers (and all info) how would you make as much $ possible in 24 hours using only online transactions? (Many follow up questions of how to get around certain fraud deterrents.)” – Ads Risk Associate candidate

“You are trying to rob houses on a street. Each house has some amount of cash. Your goal is to rob houses such that you maximize the total robbed amount. The constraint is once you rob a house you cannot rob a house adjacent to that house.” – Software Engineer candidate

“The most difficult question was the 8-hour test, which involved deriving a novel and fairly-involved algorithm, significant CSS/HTML/JS coding, and plenty of opportunities to get something subtly wrong.” – User Interface Engineer candidate

“25 racehorses, no stopwatch. 5 tracks. Figure out the top three fastest horses in the fewest number of races.” – Software Engineering Summer Intern candidate

“What is the process you would go about in spotting a fake profile?” – User Operations Analyst candidate

“Do you think that Facebook should be available to China?” – User Operations Analyst candidate

“You’re about to get on a plane to Seattle. You want to know if you should bring an umbrella. You call 3 random friends of yours who live there and ask each independently if it’s raining. Each of your friends has a 2/3 chance of telling you the truth and a 1/3 chance of messing with you by lying. All 3 friends tell you that ‘Yes’ it is raining. What is the probability that it’s actually raining in Seattle?” – Data Scientist candidate

“How much money is spent on the internet?” – Account Manager candidate

“If you were an animal what kind would you be and why?” – User Operations Analyst candidate

Now see…

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