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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
Samsung logo
Samsung
Easy
Software Engineer

Count islands in a binary grid

Problem You are given an m x n grid of characters where each cell is either '1' (land) or '0' (water). An island is formed by connecting adjacent land...

Coding & Algorithms
11
0
80 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Product Manager

Measuring Instagram's Context-Aware Search: North Star, Funnel and Guardrails

You are the PM for contextual search on Instagram. What metrics would you use to tell whether it is working? `hint Define the context first Decide wha...

Analytics & ExperimentationMetrics & KPIs
0
0
5 people solved
Oct 26, 2024
Meta logo
Meta
Medium
Product Manager

Defining Revenue Objectives and Guardrail Metrics for Instagram Reels

You own Instagram Reels as its product manager. Set out the monetization goals you would give the product and how you would track progress against the...

Analytics & ExperimentationMetrics & KPIsGrowth & Monetization
0
0
5 people solved
Oct 7, 2024
Google logo
Google
Medium
Product Manager

Go-to-market plan for a fitness device whose selling point is social features

You are the product manager responsible for launching a fitness device that is built to be social. Describe how you would take it to market: what the ...

Product Design & StrategyRequirements & Launch ExecutionGrowth & Monetization
0
0
5 people solved
Nov 9, 2023
Google logo
Google
Medium
Product Manager

Google's next bet: evaluate candidate products or markets and plan the entry

You are a product manager at Google. Propose a new product Google could build, or a new market it could enter, and make the case for it. Show how you ...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
7 people solved
Sep 11, 2025
Meta logo
Meta
Medium
Product Manager

Facebook Buy-and-Sell Launch: Mission, Goal, Metrics, and Prioritizing a Feed Item Unit

Suppose Facebook has no marketplace product of any kind, and you are the product manager asked to build one: a place where people on Facebook can buy ...

Analytics & ExperimentationMetrics & KPIsPrioritization & Tradeoffs
0
0
3 people solved
Aug 17, 2024
Google logo
Google
Medium
Product Manager

Plan a Google-Led Initiative to Reduce Homelessness in San Francisco's Downtown Core

Imagine you work at Google and the company wants to do something meaningful about homelessness in downtown San Francisco. Answer as Google, not as the...

Product Design & StrategyProduct Strategy
0
0
4 people solved
Jun 9, 2024
Roblox logo
Roblox
Hard
Data Scientist

Demonstrate fit with quantified stories and motivations

Behavioral & Leadership Technical Screen Prompt (Data Scientist) Provide two stories—one professional and one personal—that demonstrate you’re a stron...

Behavioral & Leadership
7
0
74 people solved
Oct 13, 2025
Airbnb logo
Airbnb
Medium
Product Manager

Motivation Interview: Explaining What Draws You to Airbnb

The interviewer wants to know what draws you to Airbnb. Give the answer you would give in a product manager interview. `hint Make it specific to this ...

Behavioral & LeadershipMotivation & Fit
0
0
5 people solved
Dec 1, 2023
Google logo
Google
Medium
Product Manager

Building a Product That Turns Occasional Reading Into a Lasting Habit

You are a product manager asked to create a new product that helps people improve their reading habits. Choose who it is for and the problem it solves...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
7 people solved
Dec 30, 2024
Meta logo
Meta
Medium
Data Scientist

Test two models' proportions for significance

Two search models, A and B, were each used once by 100 distinct users (one query per user). Success is defined per query by your composite metric (suc...

Statistics & Math
6
0
61 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Data ScientistNew Grad Locked

Evaluate Marketplace Changes

This question evaluates a data scientist's competency in experimental design, causal inference, metrics instrumentation, A/B testing, and marketplace ...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
7
0
105 people solved
Feb 27, 2026
Airbnb logo
Airbnb
Medium
Product Manager

Airbnb Risk Assessment: Ranking Strategic Threats and Mitigations

What do you consider the most serious risks to Airbnb's business, and how would you rank them? `hint Start from the business model Ask what Airbnb's m...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
4 people solved
Nov 21, 2024
Bitkernel logo
Bitkernel
Medium
Software Engineer

Evaluate C for-loop execution count

In C, variables m and n are both of type int. Consider the following code: `c int m, n; for (m = 0, n = -1; n = 0; m++, n++) n++; ` In standard C ...

Software Engineering Fundamentals
3
0
42 people solved
Oct 24, 2025
Hard
Data Scientist

Design an A/B test with guardrails

A/B Test Plan for a New Checkout Flow (Onsite Data Scientist) Context: You will run an online experiment of a new checkout flow. The baseline conversi...

Analytics & Experimentation
5
0
58 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Estimating Gmail's Inbound Email Volume per Second

Estimate how many email messages Gmail receives per second. `hint Pin down what one message is Decide early whether an email sent to five Gmail users ...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Nov 2, 2024
Roblox logo
Roblox
Medium
Data Scientist

Compute GSP vs VCG payments with reserves

Sponsored Search Auction with Quality Scores and Reserve You are analyzing a single-query auction with 2 ad slots. Position CTR multipliers are [0.10,...

Statistics & Math
7
0
86 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Plan a program to chart the oceans: scope, collection methods and trade-offs

You are asked how you would map the ocean. Decide what the map should contain and whom it is for, compare the ways the data could be gathered, and lay...

Product / Decision MakingRoadmapping & PlanningProduct Sense
0
0
5 people solved
Nov 20, 2023
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
Meta logo
Meta
Hard
Product Manager

Prioritize voice-to-text or assistant?

For the same accessibility-focused VR product, assume the team can ship only one feature first because engineering capacity is limited: voice-to-text ...

Product / Decision MakingPrioritization & TradeoffsAccessibility & Inclusive Design
6
0
54 people solved
Apr 10, 2024
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