Google Estimation Interview Questions

Kartikeya N. - "Clarifying questions Do we mean the Google Play store or Apple App store or some other app store? : Google Play Store Do we mean to calculate the number of apps as in 2024? : yes Are we looking at any particular data slices like in a particular country/ for a particular geography etc.? : No, I want the overall global number And we mean to calculate total number of apps that are registered on Play Store and can be searched and accessed by a user, am i right? : Yes Okay, here's how"See full answer

Coach - "Great question Evan, could you please help me with some context. Do you want me to consider Gsuite & Gmail on consumer or limit it to one or the other segment? Limit to B2C on GMAIL Promotions/ Notifications do you want me to include them? Exclude Would you want to consider only Gmail ecosystem or Gmail to All types of users? Any email recipient I would like to start with US as a geo and extrapolate would you be good with that? That's ok. That helps, than"See full answer

Pm P. - "Clarification: With kids or without kids? Assuming without With the fuel filled ? Empty Formulae: Outer frame of the school + seats + cushion + inside rods + windows + Engine + motor + other automotive parts + tires Outer frame: Closest proxy : a compact car * 4 = length of the bus Assuming reinforced steel for a car = 2 doors * 200 = 400 pounds One side of the bus = 400* *x 4 x 2 = 3200 pounds two sides = 3200 x 2 = 6400 pounds front and back width = Estimation: 4 people sit in a"See full answer

Qusai B. - "Assumption: I’m estimating the minimum number of trains required to fulfil maximum demand I’m including all trains that’s serving NYC Formula: Before I state my formula, I would like to mention a few things I will be calculating the number of trains required to fulfill all demand at the peak time during a workday. I assume peak time lasts for 2 hours I’m assuming that a train takes 2 hours to complete one roundtrip on its route, which means any given train can service rider"See full answer

Valentin B. - "Let me first ask some clarification questions / make assumptions: Any specific geographic region? => USA How do we measure bandwith? a. Bandwith is the maximum internet speed required for our google maps servers to support all google maps traffic in the USA. At which point do we measure bandwith? => at the “entrance” of each google server center Do we talk about maximum bandwith required? a. Yes, the maximum BB required to support google maps in the USA (on side of Google) Outline: O"See full answer

Anonymous Puma - "Assuming for the US Segment by size of businessNumber of employees per business sizePrice per employee=Revenue Price per employee should decrease with a larger employee base. 30M businesses in the US Small Business 60% of businesses are small=18M Average number of employees=50 Price per employee=$5 Small Business Revenue=$2.7B Medium Business 30% of them are medium=9M Average number of employees=1000 Price per employee=$3 Medium Business Revenue=$8.1B Large Business 10% of th"See full answer

Talles S. - "Me: First, let's design our product and then we will calculate the estimated amount of units sold. Before we begin, is there anything specific about this refrigerator, is this a 'smart refrigerator'? Interviewer: Yes, you can consider this is a smart refrigerator but the overall design is up to you. Me: Thank you, one more question, do we have a specific user in mind? Younger people? Retirees? Interviewer: No, you can select the user base based on your prioritization, but theoretically it cou"See full answer

P K. - "Note: Modifying the question to reflect the storage cost as well. Question: Estimate the cost of storing google photos on the photos app? Clarifying questions: Google photos - an app that syncs automatically to your camera app and uploads photos to Google cloud and reduces the need to store it on your device Cost of 1GB storage $0.002 Time storage cost per year Equation: Cost of storage per year = average cost of storing photos per day x 30 days x 12 months The ave"See full answer

D S. - "Estimate Google ads revenue. Clarifications: Google ads: only includes ads shown on Google search pages. It does not include any other ads such as display advertisement etc. Google makes money everytime a user clicks on an ad. Market - US Monthly / Yearly - Yearly Revenue in $ For 2020 ? - yes So to state the Q again, I have to estimate Google’s annual search ads revenue for 2020. Ads revene =( $ads clicked everyday * avg price per ad ) * 360 $ads clicked every"See full answer

Vaidehi P. - "Clarifying questions: Can you please clarify inflight ads? Are you referring to the Ads shown on the screens/TVs available for each seat on an airplane? Ans: Yes. International flights or domestic? Ans: You pick. ( I picked US domestic) Are you targeting any specific airline? Ans: No. All airlines. Any specific type of ads such as banner ads, video ads etc? Ans: Video We can calculate market size in two ways: By calculating number of flights flying per day in the US * seat avai"See full answer

Shreejal L. - "Clarifying questions: Should I include the tail of the helicopter when computing the area for this question? Can I assume that the average ping pong ball has a radius of around 1 inch? Assumption: Assume that the helicopter is more circular than a rectangle. Hence use the formula of a circle in computing the area. Assume that the helicopter's radius is 5 feet a 6 feet person can't stand on the helicopter because they're tall for it hence rounding down. Assume that th"See full answer

Anonymous Porcupine - "Scope Clarification with Interviewer: Is it a standard civil 4-seater helicopter or a Military cargo carrier? Do we wish to calculate the balls in the passenger compartment only or do I consider the gas tank and other spaces in a helicopter? 3.Is the helicopter loaded with seats and passengers or do I assume that there are no seats and passengers/ pilot? Assumptions: The interviewer asked me to make assumptions. Its a standard 4-seater helicopter It is empty but has the standard seat"See full answer

Kartikeya N. - "Clarifying questions We are referring to Facebook here within Meta products, correct?: Yes Can we base the CAC as of 2025?: yes Facebook acquires users through multiple channels, are we focussed on any particular channel? : We are looking at an overall CAC for Facebook What all do we want to include in CAC? Can we limit it to the marketing and advertising costs and leave aside technical, infrastructure or people costs?: yes Here’s how I will calculate this. **Customer acquisition c"See full answer

Niaz - "Clarification questions: Does this include Street view photos, which includes (roads & highways, underwater & insider building and walking street view photos) ? No, for this question we will only look at photos taken via satellites. Google earth photographs the entire earth including land and oceans ? Yes Components of the equation (Square mile covering land x Number of photos per sq mile x Size of each photo x cost) + (Square mile covering ocean x Number of photos per"See full answer

Cameron P. - "Estimate the market size for Google Fi Market size -> total revenue/sales in a market = market share Google Fi -> telecommunication services by google. Only for US market Market size = (1)google fi customers / (2)total customers in the market (2)total customers in the market 300m ppl in the US 0-90 life expectancy Factor out 0-12,80-90 240m ~250m ppl in the US who are using phones and need a telecommunication service (1)google fi customers Version 40% - 110m AT&T 30% - 70m T-Mobil"See full answer

Sumeet R. - "Got a very different answer than everybody. I seem to be off here. But here goes ..will appreciate feedback Clarifying ..all human population in US and not just working population? Yes US Population: ~300Mn Segmenting Population. 0-19 - 75M 20-40- 75M 41-60 - 75M 60-80- 75M 80-100 - 5 Mn Removing 80 segment as stay at home and not eligible for commuting Revised Table 2-19 - 75M 20-40- 75M 41-60 - 75M 60-80- 75M Out of this employable audience that is has"See full answer

Anonymous Muskox - "Clarification Questions I am assuming we need to deliver the packages to the doorstep. I am assuming we need to deliver all the packages which are ordered in a single day. For more product interview experience, please visit TechnoManagers https://technomanagers101.blogspot.com/ High level formula Number of Drones required = (US Population 330M)(Excluding 30% those below 10 years and above 65 years)(internet penetration 90%)([ (10% high networth people)(30 orders per year) ] + ["See full answer

Chelsea F. - "Questions: Clarify: High school = grades 9-12? So roughly ages 15-18 (4 years)? Are we talking about all high-school aged kids, or kids who actually attend HS? Do we count home schoolers? Drop outs? Assumptions: Let's assume we're estimating the number of children in the U.S. who are enrolled in/attend HS Assuming a uniform distribution of the population across ages Approach: U.S. Population = 300m Average lifespan = 80 years 4 years represented by HS age = 5% of the populati"See full answer