Interview Questions

Ramesh Y. - "Clarifications: Is it passenger/cargo/defense Answer: Passenger Is it direct or stops included - Direct Last I read London had 80 M passengers annually Per month - 6.7 M Per Day - 220 K Assumption here - London is a hub and it has flights to all continents. Assumptions are the split below Flights to Europe -- 30% Flights to USA -- 20% Flights to Asia -- 30% Flights to Africa -- 10% Flights to Australia -- 10% Dubai is part of Asia - 30% of 220 K is 66K Within Asia - Passeng"See full answer

Priyanka C. - "Firstly need to check is this service really beneficial or not. And video service provide more realistic perspective about the product so keep it"See full answer

Lucas G. - "Null hypothesis (H0): the coin is fair (unbiased), meaning the probability of flipping a head is 0.5 Alternative (H1): the coin is unfair (biased), meaning the probability of flipping a head is not 0.5 To test this hypothesis, I would calculate a p-value which is the probability of observing a result as extreme as, or more extreme than, what I say in my sample, assuming the null hypothesis is true. I could use the probability mass function of a binomial random variable to model the coin toss b"See full answer

Arvind R. - "Goal: Increase adoption of HPC capabilities offered by Google within enterprise customer context Vision: Accelerate high computing needs of enterprise, driven by innovation and definitive business outcomes Does this align with Google's vision - YES Trend Analysis: Technology: a. Introduce Intraday liquidity calculations b. Improve fraud detection using much large volume of data c. Faster value added risk calculations. d. Graph analysis for entity linking for large volume of customer a"See full answer

Prashant R. - "Goal of the pilot deployment: 1) Evaluate if riders would choose self driving cars (SDC) over regular driver operated cars 2) Test SDC performance/efficiency in given area before scaling operations Interviewer liked my goals and asked me to proceed , this is where I got stuck. I wasnt sure if this was an algorithmic based problem or something else and started saying about general issues SDC may have that may impact customer experience such as SDC waiting too long in traffic affecting ETA, SDC"See full answer

Ivan B. - "At Facebook, you notice a sudden spark in DAUs in Indonesia — how would you determine the cause of this? I'd like to clarify a few things before starting to brainstorm root causes to hopefully narrow down the number of possibilities if you don't mind? - Not at all, please go ahead... Over what time frame has this spark occurred? - DAU's have sparked over the past 3 weeks. Thank you! Next, what are we qualifying DAU as? Is it simply just a user opening the app at least once during the"See full answer

Exponent - "This is another Diagnosis problem. To answer this question, we suggest you use our framework (along with the TROPIC method) to be as thorough as possible. The framework is as follows: Ask clarifying questions List potential high level reasons Gather Context (TROPIC)Time Region Other features / products (internal) Platform Industry / Competition Cannibalization Establish a theory of probable cause Test theories Propose solutions Summarize "See full answer

Emily T. - "Solution picked: a half software half hardware remote control"See full answer

Exponent - "This is another Diagnosis problem. To answer this question, we suggest you use our framework (along with the TROPIC method) to be as thorough as possible. The framework is as follows: Ask clarifying questions List potential high level reasons Gather Context (TROPIC)Time Region Other features / products (internal) Platform Industry / Competition Cannibalization Establish a theory of probable cause Test theories Propose solutions Summarize "See full answer

Darpan D. - "Clarifying and Assumptions Is there any specific geography we need to restrict to? Assumption: Total worldwide. Is there any specific segment we need to restrict to? Assumption: All segments. Number of users Total worldwide users: 300,000,000 Storage per user Slice the users into 3 segments. Low users 80% Free tier 2 GB per user available Using the 80-20 rule for segmentation. Medium users 10% Basic paid tier 2 TB per user available Usi"See full answer