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Facebook Data Science Interview Questions
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You are about to get on a plane to Seattle, you want to know whether you have to bring an umbrella or not. You call three of your random friends and as each one of them if it's raining. The probability that your friend is telling the truth is 2/3 and the probability that they are playing a prank on you by lying is 1/3. If all 3 of them tell that it is raining, then what is the probability that it is actually raining in Seattle.

135

You have been given the data on Facebook user's friending or defriending each other. How will you determine whether a given pair of Facebook users are friends or not?

152

What approach will you follow to develop the love,like, sad feature on Facebook?

174

You are given 50 cards with five different colors- 10 Green cards, 10 Red Cards, 10 Orange Cards, 10 Blue cards, and 10 Yellow cards. The cards of each colors are numbered from one to ten. Two cards are picked at random. Find out the probability that the cards picked are not of same number and same color.

221

Pick up a coin C1 given C1+C2 with probability of trials p (h1) =.7, p (h2) =.6 and doing 10 trials. And what is the probability that the given coin you picked is C1 given you have 7 heads and 3 tails?

171

In a given day, how many birthday posts occur on Facebook?

144

Implement a sorting algorithm for a numerical dataset in Python.

160

A building has 100 floors. Given 2 identical eggs, how can you use them to find the threshold floor? The egg will break from any particular floor above floor N, including floor N itself.

233

You have 2 dices. What is the probability of getting at least one 4? Also find out the probability of getting at least one 4 if you have n dices.

299

What would you add to Facebook and how would you pitch it and measure its success?

198

How will you test that there is increased probability of a user to stay active after 6 months given that a user has more friends now?

322

How can bogus Facebook accounts be detected?

155

How many dentists are there in US?

137

What is the probability of pulling a different shape or a different colour card from a deck of 52 cards?

125

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 (example, if you roll a 6 on the first roll, you can stop). What is your expected pay-out?

153

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Un-Answered Questions

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1147


Hi, I would like to check if my understanding is correct I have a negative amount for provision of income tax in my balance sheet from my previous financial year.What are the accounting treatments for income tax paid and then refunded to you for the current year? Is this correct? For payment Dr provision of income tax cr bank For tax refund Cr provision of income tax Dr bank Do I need to input anything in income tax expense acct?

1375


What is import javax swing * used for?

653


Is string serializable in java?

643






What is control tables?

465


What are the various indexes in teradata? Why are they preferred?

676


Tell me how do I escape data before storing it into the database?

646


How come I get a "No Current Record" error when I use a a Data Control on an empty table?

1173


what is a difference of subclass and main class

1289


How Hive distributes the rows into buckets?

541


Is it recommended to use global variables in a program that implements goroutines?

1


What is f:convertnumber tag in jsf (javaserver faces)?

72


Give one example of metal classified as per structure as bcc, fcc, hcp and ccp.

720


Explain what happens when you travel across the dateline?

690