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Facebook Data Science Interview Questions
Questions Answers Views Company eMail

You are at a Casino. You have two dices to play with. You win $10 every time you roll a 5. If you play till you win and then stop, what is the expected pay-out?

320

Which technique will you use to compare the performance of two back-end engines that generate automatic friend recommendations on Facebook?

410

You have two tables-the first table has data about the users and their friends, the second table has data about the users and the pages they have liked. Write an SQL query to make recommendations using pages that your friends liked. The query result should not recommend the pages that have already been liked by a user.

367

How many people are using Facebook in California at 1.30 PM on Monday?

386

How many big Macs does McDonald sell every year in US?

267

How would add new Facebook members to the database of members, and code their relationships to others in the database?

329

You are given two tables- friend_request and request_accepted. Friend_request contains requester_id, time and sent_to_id and request_accepted table contains time, acceptor_id and requestor_id. How will you determine the overall acceptance rate of requests?

311

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588