PracHub
QuestionsExperienceLearningGuidesInterview Prep
Visa Tools

Visa Tools

Visa Sponsors

Find employers with sponsorship filings

H-1B Odds Calculator

Explore your lottery selection odds

Visa Bulletin

Monthly green-card priority dates

PracHub

Master your tech interviews with 10,000+ real questions from top companies.

Product

  • Questions
  • Learning Tracks
  • Interview Guides
  • Resources
  • Green Card Tracker
  • Premium
  • Practice with AI agents
  • For Universities

Browse

  • By Company
  • By Role
  • By Category
  • Topic Hubs
  • Interview Experiences
  • SQL Questions
  • Blind 75
  • AI Coding Questions
  • Compare Platforms
  • Discord Community

Support

  • support@prachub.com

Legal

  • Privacy Policy
  • Terms of Service
  • About Us

© 2026 PracHub. All rights reserved.

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
LinkedIn logo
LinkedIn
Medium
Product Manager

Fermi Estimation Case: Counting the Computers at LinkedIn

An interviewer asks you to estimate the number of computers that LinkedIn, the professional networking company, has. Lay out your structure, state eve...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Oct 24, 2023
Google logo
Google
Medium
Product Manager

Estimation: sizing Google's total computer fleet

Estimate how many computers Google owns. Show how you break the problem down, label each assumption, and finish with a figure, a range and the assumpt...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Nov 6, 2023
Google logo
Google
Medium
Product Manager

Estimation: Working Back From G Suite Revenue to a User Count

You are told that G Suite, Google's paid suite of email, documents, storage and meeting tools for organizations (now called Google Workspace), has rev...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Oct 22, 2023
Google logo
Google
Medium
Product Manager

Market sizing: yearly US spending on sanitizer, estimated by buyer segment

Estimate the size of the sanitizer market in the United States. Give an annual dollar figure and walk the interviewer through how you reached it. `hin...

Product / Decision MakingEstimation & Market Sizing
0
0
6 people solved
Feb 13, 2025
Google logo
Google
Medium
Product Manager

Revenue guesstimate for Google's AdSense publisher ad network

Estimate Google's AdSense revenue. AdSense is the program through which website owners show ads that Google sells on their pages and receive a share o...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Jan 28, 2024
Amazon logo
Amazon
Medium
Product Manager

Launch Plan and Market Sizing: Coding Courses for Older Adults in India

You are responsible for bringing to market a product that teaches programming languages to older adults in India. Describe how you would launch it, an...

Product Design & StrategyRequirements & Launch ExecutionEstimation & Market Sizing
0
0
6 people solved
Jul 13, 2024
Google logo
Google
Medium
Product Manager

Fermi estimate of YouTube's video storage footprint in exabytes

You are interviewing for a product manager role at Google. Estimate how much storage YouTube needs to hold every video on the platform. Explain your a...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Sep 16, 2025
Meta logo
Meta
Medium
Product Manager

Sizing What It Costs Facebook to Keep Its Photo Product Running

Estimate the budget Meta needs to keep Facebook's photo product running. Decide what that budget includes, lay out how you structure the estimate, cal...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Oct 29, 2023
Google logo
Google
Medium
Product Manager

Next-gen vending kiosk for Bay Area World Cup 2026 stadiums and how many to deploy

The Bay Area will be one of the host regions for the 2026 soccer World Cup. You are the product manager asked to design a futuristic vending machine t...

Product Design & StrategyProduct SenseEstimation & Market Sizing
0
0
7 people solved
Dec 14, 2024
Google logo
Google
Medium
Product Manager

Build a 2020 Market-Size Estimate for Autonomous Vehicles From First Principles

Estimate the size of the market for driverless cars in 2020. Explain how you define the market, lay out the structure of your estimate, label every as...

Product / Decision MakingEstimation & Market Sizing
0
0
3 people solved
Nov 5, 2023
Google logo
Google
Medium
Product Manager

Estimate the Expected Stop Time for Someone Passing Through a Road Junction

An interviewer asks you how long the average person waits at an intersection. Decide exactly what you are estimating, build the estimate from clearly ...

Product / Decision MakingEstimation & Market SizingProbability
0
0
6 people solved
Apr 11, 2025
Google logo
Google
Medium
Product Manager

Estimate Yearly US Unit Volume of Hershey's Brand Chocolate Bars

Estimate how many Hershey's chocolate bars were sold in the United States over the past year. `hint Habits differ by person and by occasion Split the ...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Nov 25, 2024
Google logo
Google
Medium
Product Manager

Estimation: Yearly Time Spent Idling at Red Lights Across the US

Estimate the total time that people in the United States spend sitting in their vehicles while waiting at traffic signals. Agree on what you are count...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Oct 7, 2024
Google logo
Google
Medium
Product Manager

Capacity sizing: Google Drive disk space and network throughput for the coming year

You are a product manager on Google Drive. Estimate how much storage capacity and how much network bandwidth the Drive service will need next year. Sh...

Product / Decision MakingEstimation & Market SizingSystem Design Fundamentals
0
0
4 people solved
Dec 26, 2023
Google logo
Google
Medium
Product Manager

Fermi estimate: total kernel count in a 10 kg sack of rice

A bag of rice weighs 10 kg. Roughly how many individual grains are inside it? Walk through your estimate step by step. `hint Shrink the problem Work o...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Dec 9, 2024
Amazon logo
Amazon
Medium
Product Manager

Back-of-envelope estimate of what one self-driving truck costs

Estimate how much a driverless truck costs. Explain how you break the problem down, label each assumption, show your arithmetic, and finish with a fig...

Product / Decision MakingEstimation & Market Sizing
0
0
3 people solved
Jan 14, 2024
Google logo
Google
Medium
Product Manager

Recommend Google's Long-Term Strategic Bets and How to Prioritize Them

You are a product manager at Google, and leadership asks for your view on where the company should invest over the next five to ten years. Recommend t...

Product Design & StrategyProduct StrategyPrioritization & Tradeoffs
0
0
3 people solved
Sep 12, 2025
Google logo
Google
Medium
Product Manager

Fermi Estimate: Total Daily Minutes Spent Watching YouTube Cooking Content

How much time, added up across all viewers, goes into watching cooking videos on YouTube on a typical day? Build an estimate, explain the assumption b...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Sep 21, 2024
Google logo
Google
Medium
Product Manager

Chrome Strategy: Pick the Usage Metric and a Two-Year Roadmap to Multiply It Fivefold

You are a product manager on Google Chrome. The goal you are given is to make Chrome usage five times larger within two years. How would you approach ...

Product Design & StrategyProduct StrategyGrowth & Monetization
0
0
5 people solved
Mar 14, 2025
Google logo
Google
Medium
Product Manager

Back-of-the-Envelope Count of Canada's Cows

Estimate how many cows there are in Canada. Show how you break the problem down, label each assumption, and end with a figure, a range and how confide...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Oct 29, 2023
Previous1...181920...23Next
Popular Categories
SQLBlind 75
Daily Quest

Sign in to earn XP for every problem you solve.

Choose your next challenge

All learning

Blind 75

75 free coding problems to build your foundations, with hints, explanations, and a progress checklist.

Arrays · Graphs · Dynamic programming

Explore Blind 75

ML System Design

Work through the decisions behind machine learning systems, from data to serving.

Data · Models · Evaluation

Explore the course

System Design Interview

Practice reasoning about architecture, scale, and the tradeoffs that shape a system.

Architecture · Scale · Tradeoffs

Explore the course

Explore by company

All companies
  • Meta
  • Google
  • Amazon
  • Apple
  • Microsoft
  • Netflix
  • Capital One
  • TikTok
  • DoorDash
  • Uber
  • Coinbase
  • Airbnb
  • LinkedIn
  • Salesforce
  • Snapchat
  • Spotify
  • PayPal
  • Lyft
  • Pinterest
  • Anthropic
  • OpenAI
  • Databricks
  • Rippling
  • Jane Street

Explore by role

  • Data Scientist
  • Software Engineer
  • Machine Learning Engineer
  • Product Manager
  • Data Engineer
  • Data Analyst
  • Frontend Engineer
  • Backend Engineer
  • Site Reliability Engineer
  • Technical Program Manager

Explore by category

  • Blind 75
  • Coding & Algorithms
  • System Design
  • Machine Learning
  • ML System Design
  • SQL & Python
  • Analytics & Experimentation
  • Behavioral & Leadership
  • Statistics & Math
  • Product / Decision Making
  • Product Design & Strategy
  • SWE Fundamentals

Popular interview guides

  • Meta SWE
  • Meta DS
  • Meta PM
  • Google SWE
  • Google DS
  • Google MLE
  • Amazon SWE
  • Amazon DS
  • Amazon DE
  • Apple SWE
  • Apple MLE
  • Microsoft SWE
  • Microsoft DS
  • TikTok SWE
  • TikTok DS
  • Uber SWE
  • Uber DS
  • DoorDash SWE
  • DoorDash DS
  • Airbnb SWE
  • Airbnb DS
  • LinkedIn SWE
  • LinkedIn DS
  • Netflix SWE
  • Coinbase SWE
  • Capital One DS
  • OpenAI SWE
  • Anthropic SWE

Popular question categories

  • Blind 75
  • Meta Coding
  • Google System Design
  • Amazon Coding
  • Meta Analytics
  • Google ML
  • Amazon System Design
  • Capital One SQL
  • TikTok ML
  • Meta SQL
  • Uber Analytics
  • DoorDash Coding
  • Google Coding
  • Netflix System Design
  • Airbnb Analytics
  • LinkedIn SQL