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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
454
Companies
967
Updated
10.18.2026
454 Questions 967 Companies10.18.2026
PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
Tata 1mg logo
Tata 1mg
Medium
Product Manager

City Guesstimate: Sizing Bengaluru's Restaurant Count

Give a back-of-the-envelope figure for how many restaurants operate in Bengaluru, India, and walk through how you reach it. `hint Two routes to a numb...

Product / Decision MakingEstimation & Market Sizing
0
0
2 people solved
Jun 20, 2025
Google logo
Google
Medium
Product Manager

Sizing a Shopping Mall's Passenger Elevator Fleet for Peak Weekend Traffic

You are asked to estimate how many passenger elevators a shopping mall should have. The interviewer gives no details about the mall, so you choose its...

Product / Decision MakingOperations & CapacityEstimation & Market Sizing
0
0
6 people solved
Feb 2, 2025
Google logo
Google
Medium
Product Manager

Market-Sizing Estimate: Total Windows on New York City's Buildings

Estimate the number of windows in New York City. Talk through your approach as you would in an interview: how you break the problem down, the assumpti...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Aug 31, 2024
Google logo
Google
Medium
Product Manager

Waymo Robotaxi Estimation: Rider-Reported Safety and Service Issues in the Bay Area

Waymo operates a driverless ride-hailing service in the San Francisco Bay Area. Estimate how many incidents the people using that service could report...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Jul 10, 2024
Tesla logo
Tesla
Medium
Product Manager

Estimate US Auto Repair Jobs Affected by Maintenance-Free EVs at 5 and 10 Years

Tesla says its electric vehicles need so little upkeep that auto repair and service shops will become obsolete. Estimate how many jobs in the United S...

Product / Decision MakingEstimation & Market Sizing
0
0
2 people solved
Feb 28, 2024
Google logo
Google
Medium
Product Manager

Fermi Estimate: Network Data Rate Behind a Star Wars Holographic Projection

In the Star Wars films, characters send and receive three-dimensional holograms of one another. Estimate how much bandwidth one of these holographic t...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Feb 10, 2024
Amazon logo
Amazon
Medium
Product Manager

Size the yearly cost of abusive orders at Amazon and design countermeasures

You are a product manager at Amazon. Some people exploit the ordering process and the policies around it to get goods or money they are not entitled t...

Product / Decision MakingTrust & SafetyEstimation & Market Sizing
0
0
4 people solved
Jul 27, 2024
Google logo
Google
Medium
Product Manager

Fermi estimate of the trains running on New York City's subway network

How many trains does New York City's subway run? Produce an estimate you can defend: agree with the interviewer on what you are counting, build an equ...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Aug 24, 2024
Google logo
Google
Medium
Product Manager

Apple Tablet Market Sizing: European iPad Unit Sales for 2019

How many iPads were sold across Europe during 2019? You cannot look anything up, so build the estimate from assumptions you state and explain out loud...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Jun 20, 2024
Google logo
Google
Medium
Product Manager

Assess Apple's supply-chain, market and pricing exposure to US-China trade friction

How do the trade tensions between the United States and China affect Apple's business? `hint Follow one device Trace an iPhone from where its parts ar...

Product Design & StrategyMarket & Competitive AnalysisProduct Strategy
0
0
3 people solved
Jan 18, 2025
Google logo
Google
Medium
Product Manager

Turn Venture Funding Into a New Tech Product: Problem, Users, Revenue Model and Market Sizing

The interviewer plays a venture capitalist who offers you \$20M to build any product or service you like, as long as technology enables it. Walk throu...

Product Design & StrategyProduct SenseEstimation & Market Sizing
0
0
4 people solved
Nov 30, 2025
Google logo
Google
Medium
Product Manager

Self-Driving Market Sizing: Estimating Google's Yearly Autonomous Vehicle Revenue

Estimate how much revenue Google could earn from driverless cars. Explain which business you are sizing, build the estimate step by step, and check wh...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
May 7, 2025
Google logo
Google
Medium
Product Manager

Fermi estimate of how many hotel properties New York City has

How many hotels does New York City have? Give an estimate with a sensible range, show the equation behind it, and say which of your inputs you trust l...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Aug 24, 2024
Microsoft logo
Microsoft
Medium
Product Manager

Bing Search Growth on Android: Segments, Channels and Launch Steps to Reach 1M Users

Microsoft wants Bing to gain one million new users on Android. As the product manager, put together the go-to-market strategy that would get there: wh...

Product Design & StrategyGrowth & MonetizationMetrics & KPIs
0
0
5 people solved
Nov 14, 2024
Google logo
Google
Medium
Product Manager

Estimate How Long Philadelphia's Airport Needs to Recover From a One-Day Closure

Philadelphia International Airport is fully shut down for 24 hours: no flights take off or land. After it reopens, how long will it take until the air...

Product / Decision MakingOperations & CapacityEstimation & Market Sizing
0
0
5 people solved
May 19, 2025
Google logo
Google
Medium
Product Manager

Forecasting a New Feature's Adoption Lift With Pre-Launch Research and Tests

You are a product manager with a new feature on the roadmap. Before it launches, how would you work out the effect it is likely to have on adoption of...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
0
0
6 people solved
Nov 27, 2025
Google logo
Google
Medium
Product Manager

Go-to-market and pricing plan for a working object-teleportation technology

Assume your company has found a way to teleport inanimate objects, and the technology works. As a product manager, explain how you would launch it and...

Product Design & StrategyGrowth & MonetizationProduct Strategy
0
0
5 people solved
Jul 2, 2025
Google logo
Google
Medium
Product Manager

Market Sizing: Yearly US Online Revenue From Fruit and Vegetable Purchases

How much money is spent each year on fruits and vegetables bought online in the United States? Build an estimate, state each assumption as you go, and...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Aug 23, 2024
Google logo
Google
Medium
Product Manager

Size the daily volume of incoming voice calls: a PM estimation exercise

Estimate how many calls are received in a single day. Define what you are counting, build the number from stated assumptions, and sanity-check where y...

Product / Decision MakingEstimation & Market Sizing
0
0
3 people solved
Jan 9, 2025
Google logo
Google
Medium
Product Manager

Estimate the Annual Market for Paid Suborbital and Orbital Space Tourism

Estimate the size of the market for commercial space travel, meaning trips in which private customers pay to fly to space as passengers. Choose and ju...

Product / Decision MakingEstimation & Market Sizing
0
0
6 people solved
May 18, 2025
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