• Uber's co-founder and former CEO Travis Kalanick sold off close to $166 million shares over the past three days, continuing to offload his stake in the ride-sharing giant (UBER)
• 13 fascinating animal species discovered in the last decade, from the 'Wakanda' fish to the world's tiniest frog
• Amazon's new video game costs $40, but some players who signed up years before launch will get it for free (AMZN)
• The Supreme Court just set the stage for a blockbuster ruling on Trump's financial records

FACEBOOK IS ONE of the most difficult companies to interview with, according to Glassdoor, an online jobs community.

One reason the process is so challenging: They ask tough questions.

To figure out exactly what the social media giant asks job candidates, Glassdoor sifted through thousands of online reviews submitted by people who went through the interview process.

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

Source: Will Clayton/Flickr

“You can roll a dice three times. You will be given $X where X is the highest roll you get. You can choose to stop rolling at any time (e.g., if you roll a 6 on the first roll, you can stop). What is your expected payout?” —Facebook Data Scientist interview candidate

Source: AP/Press Association Images

“How much money is spent on the internet?” —Facebook Account Manager interview candidate

Source: Shutterstock

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

Source: Alessandra Tarantino

“Two points are randomly placed on a line of length 1. What is the probability that the three segments created form a triangle?” —Facebook Product Analyst interview candidate

Source: Businessinsider

“How would you redesign the features/functionality of a television remote control?” —Facebook Product Designer interview candidate

Source: Businessinsider

“Estimate the number of airports in the US.” —Facebook Product Manager interview candidate

Source: AP/Press Association Images

“How would you find out the number of cars passing through a busy bridge?” —Facebook Software Engineer interview candidate

Source: AP/Press Association Images

Read: Cork pub pranks job hopefuls with the most mortifying interview ever

Read: The words we all use on our CVs (and shouldn’t)