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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?

371

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

451

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.

428

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

427

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

320

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

364

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?

349

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Un-Answered Questions

Can you send and receive on same udp port?

1015


What are md5 and sha1 signatures?

114


Where is singleton pattern used?

998


Explain angular 4 providers.

769


What are some environmental applications of AI?

75


What is DNA computing ?

3176


What is meant by application domain?

911


Tell me when is the update_statistics command used?

1113


What do you mean by buffer manager?

1050


How do I delete a mysql user?

848


Explain how do you convert a value-type to a reference-type?

876


What is the benefit of ms excel?

587


What is the significance of sender & receiver cost elements & cost centers?

1186


how to restore tsm server database without volhist file, devconfig files?

1074


Do we need to create index on primary key?

929