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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
X (Twitter) logo
X (Twitter)
Medium
Product Manager

Go or no-go, target users and price for an ad-free Twitter subscription tier

Twitter is considering a paid subscription tier. Subscribers would get three things: no ads, the ability to undo a tweet, and a handful of smaller fea...

Product / Decision MakingGrowth & MonetizationProduct Strategy
0
0
2 people solved
Sep 9, 2024
Google logo
Google
Medium
Product Manager

Fermi Estimate of Weekly Zoom Meeting Volume From Users and Meeting Habits

In a product manager interview, you are asked to estimate how many meetings take place on Zoom in an average week. Lay out your approach, label each a...

Product / Decision MakingEstimation & Market Sizing
1
0
11 people solved
Jun 29, 2025
Google logo
Google
Medium
Product Manager

Design a Google product that helps people discover, organize and attend events

Google wants to build a product for event gathering, and you are the product manager asked to design it. The brief says nothing more: it names no type...

Product Design & StrategyProduct Sense
0
0
6 people solved
May 4, 2024
Google logo
Google
Medium
Product Manager

Google product for travelers: pick a segment, a core problem and a first release

Google has asked you, as a product manager, to design a travel app. Decide which travelers it serves and which travel problem it solves, define what t...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
8 people solved
Feb 23, 2025
Meta logo
Meta
Hard
Data Scientist

Select interest thresholds under skewness and cost

Profit-Optimal Threshold Selection from an Interest Score You have a per-user interest_score s ∈ [0, 1] for a new feature. The score distribution appe...

Analytics & Experimentation
7
0
57 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Software Engineer

Implement O(1) randomized multiset

Implement O(1) randomized multiset Write code for a data structure that supports add(x), remove(x), and getRandom() in average O( 1) time where duplic...

Coding & Algorithms
4
0
70 people solved
Jul 17, 2025
Google logo
Google
Medium
Product Manager

Reimagining search: a product vision for how people will find information

You are a product manager asked to picture how people will look for information in the future and to design the search product that serves them. Expla...

Product Design & StrategyProduct SenseAI Product Management
0
0
4 people solved
Mar 7, 2024
Amazon logo
Amazon
Medium
Applied Scientist

Implement inventory allocation with backorders

Implement inventory allocation with backorders Design and implement a function to process an event stream for an e-commerce marketplace. Input: ( 1) i...

Coding & Algorithms
3
0
59 people solved
Jul 17, 2025
Google logo
Google
Medium
Product Manager

Google Product Strategy: Find an Area Where Google Should Invest More and Defend It

You are interviewing for a product manager role at Google. The interviewer asks you to identify a part of the business, a market, or a product area wh...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
5 people solved
Mar 15, 2026
Google logo
Google
Medium
Product Manager

Airport Capacity Case: A Product Plan for Handling Twice Today's Volume

You are asked to double an airport's throughput, a 100% increase over what it handles today. Decide what throughput should mean, work out what limits ...

Product Design & StrategyOperations & CapacityPrioritization & Tradeoffs
0
0
5 people solved
Nov 2, 2023
Google logo
Google
Medium
Product Manager

Market Sizing: Estimate Yearly Television Buyers in New York for a TV Maker

How large is the pool of potential television buyers in New York? Estimate it and explain your thinking as you go. The question comes from a company t...

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

Fermi Estimate: Cars on the US-101 Corridor Linking San Francisco and Mountain View

Estimate the number of cars on US Highway 101 on the section that connects San Francisco with Mountain View. Talk through how you would size it, state...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Oct 20, 2023
Google logo
Google
Medium
Product Manager

Design a Product Where Musicians Publish Work and Grow Fans, Modeled on YouTube

You are asked to create a platform in the spirit of YouTube, but built for artists, and the artists in question are musicians. As the product manager,...

Product Design & StrategyProduct SenseGrowth & Monetization
0
0
5 people solved
Jan 4, 2024
Meta logo
Meta
Medium
Product Manager

Making Facebook Pages more valuable and measuring whether the change worked

You are a product manager on Facebook Pages, the public profiles that businesses, creators, public figures, media outlets and organizations run on Fac...

Product Design & StrategyProduct Design & ImprovementExperiment Design (A/B Testing)
0
0
5 people solved
Nov 26, 2023
Meta logo
Meta
Medium
Product Manager

Instagram commerce go/no-go: factors to weigh and how to validate the bet

Imagine Instagram, Meta's photo and video sharing app, does not yet let people shop, and you are asked whether it should add shopping to its app and w...

Product Design & StrategyProduct StrategyExperiment Design (A/B Testing)
0
0
5 people solved
Feb 12, 2024
Meta logo
Meta
Medium
Product Manager

Size Facebook's Ad Business Bottom-Up From Daily Users, Ad Load and CPM

Make a back-of-the-envelope estimate of how much Facebook earns from advertising in a year. `hint Segment before you multiply What an advertiser pays ...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Nov 15, 2024
Uber logo
Uber
Medium
Product Manager

Uber fare splitting: north-star metric, funnel, guardrails and how to measure them

Uber's rider app lets people who share a ride split what it costs. Assume the feature works as it is commonly described: during the trip, the rider wh...

Analytics & ExperimentationMetrics & KPIsUser Behavior & Funnels
0
0
7 people solved
Mar 30, 2025
Google logo
Google
Medium
Product Manager

Market sizing: how big is California's Tesla Model 3 fleet?

Estimate how many Tesla Model 3 cars there are in California. Walk through how you structure the estimate, call out each assumption, and finish with a...

Product / Decision MakingEstimation & Market Sizing
0
0
4 people solved
Mar 17, 2024
DoorDash logo
DoorDash
Medium
Product Manager

Music Streaming App Teardown: Explain Why the One You Prefer Wins

Which music app do you like best, and why? Name the app and explain what it does better than the alternatives. `hint Explain the mechanism, not the fe...

Product Design & StrategyProduct SenseMarket & Competitive Analysis
0
0
6 people solved
Mar 13, 2025
Microsoft logo
Microsoft
Hard
Data Scientist

Design a model for imbalanced conversions

Predicting Purchase Propensity After a Campaign (5% Positives) You previously ran a marketing campaign to 10,000 customers and observed 500 purchases ...

Machine Learning
14
0
103 people solved
Oct 13, 2025
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