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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
Google logo
Google
Medium
Product Manager

Fermi estimate: size the outstanding stock of US one-dollar notes

Estimate how many US dollar bills are circulating right now. Explain how you structure the estimate, label each assumption, show the arithmetic and fi...

Product / Decision MakingEstimation & Market Sizing
0
0
5 people solved
Jun 17, 2024
L'Oreal logo
L'Oreal
Medium
Product Manager

Design an In-App Guide That Helps L'Oreal Shoppers Choose the Right Beauty Products

You are a product manager working on L'Oreal's mobile app. Shoppers find it hard to work out which cosmetics product suits them best, so they turn to ...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
8 people solved
Jul 24, 2025
Meta logo
Meta
Medium
Product Manager

Meta Product Sense: Reinventing How People Watch Television

Meta's CEO asks you, as a product manager, to redesign the experience of watching television. Explain how you would approach it: what Meta should want...

Product Design & StrategyProduct SenseProduct Strategy
0
0
5 people solved
Nov 27, 2023
Meta logo
Meta
Medium
Data Scientist

Solve Data-Structure Problems in Python Interview Round

Scenario Interview coding round focusing on simple data-structure problems in Python. Question Given an integer, rearrange its digits (considering onl...

Coding & Algorithms
6
0
72 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Product Manager

Diagnose a single-day drop in Facebook birthday greetings

You are the product manager for Birthdays on Facebook: the reminders that tell people a friend has a birthday and the places where they can post or se...

Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels
0
0
7 people solved
Mar 9, 2025
Meta logo
Meta
Medium
Product Manager

Smart Refrigerator Product Concept and Launch Strategy: From Validation to Retail

Propose a smart refrigerator that is a genuinely new kind of product, then walk through each step you would take to bring it to market and sell it. Cl...

Product Design & StrategyProduct SenseRequirements & Launch Execution
0
0
9 people solved
Oct 7, 2025
FreeWheel logo
FreeWheel
Medium
Product Manager

How Product Management and Product Engineering Differ in Ownership and Success Measures

In a product manager interview at FreeWheel, you are asked to explain how product management differs from product engineering. Describe what each disc...

Behavioral & LeadershipConflict & CollaborationRequirements & Launch Execution
0
0
7 people solved
May 22, 2025
Meta logo
Meta
Medium
Product Manager

Investigating a 20% Increase in Facebook Event RSVPs: Real, Healthy or Artifact?

Suppose you are the product manager for Facebook Events at Meta, and the number of RSVPs on events has risen by 20%. Explain what you would do: how yo...

Analytics & ExperimentationMetric DiagnosticsMetrics & KPIs
0
0
8 people solved
Apr 4, 2025
Coinbase logo
Coinbase
Medium
Product Manager

Teaching Prime Numbers to a Young Child: Simplifying a Technical Idea

Explain what prime numbers are in a way a five-year-old could understand. `hint Start with things, not words A five-year-old can count and can share t...

Behavioral & LeadershipCommunication & Stakeholders
0
0
6 people solved
Aug 17, 2024
Point72 logo
Point72
Medium
Data Scientist

Convert integer dates to quarters

Given an 8-digit integer date_key in YYYYMMDD (e.g., 20240331), write: (a) a SQL expression and (b) a Python function that convert it to a quarter lab...

Data Manipulation (SQL/Python)
2
0
19 people solved
Oct 13, 2025
Instacart logo
Instacart
Hard
Data Scientist

Compute duration and stopping rules correctly

Experiment Runtime Planning: Same‑Day Delivery Attach Rate You are planning an A/B test on the same‑day delivery attach rate (the proportion of eligib...

Analytics & ExperimentationExperiment Design (A/B Testing)Sequential & Adaptive Testing
14
0
145 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Metric Diagnosis: Investigating a Sharp Fall in Weekly Usage on Android

Weekly usage of a consumer app on Android has dropped suddenly. How would you work out what happened? Describe the order in which you would investigat...

Analytics & ExperimentationMetric Diagnostics
0
0
4 people solved
Jun 18, 2024
Google logo
Google
Medium
Product Manager

Netflix Engagement Diagnosis: A Million Paying Accounts With No Logins

You are on the Netflix product team. One million subscribers whose subscriptions are active are not logging in to the service. How would you investiga...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
0
0
4 people solved
Apr 14, 2024
Medium
Data Scientist

Design metrics resilient to data quality

Design a robust metric and compute it using only window functions (no JOINs) to show how data-quality issues change conclusions. Schema: payments_raw(...

Analytics & Experimentation
5
0
38 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Product Design: A Matchmaking App for Divorced and Widowed Adults Seeking Marriage

Your task is to create an app for adults who hope to marry again, whether after a divorce or after the death of a spouse. Explain which users you woul...

Product Design & StrategyProduct SenseGrowth & Monetization
0
0
4 people solved
Aug 16, 2024
Google logo
Google
Medium
Product Manager

Product Design Case: Reinventing the Everyday Alarm Clock

Design an alarm clock that improves on what people use today. You decide who it serves, which problem it fixes and what form it takes. `hint Look at t...

Product Design & StrategyProduct Sense
0
0
5 people solved
Dec 14, 2023
Meta logo
Meta
Medium
Product Manager

Metrics Framework for Judging Whether Facebook's Like Feature Is Succeeding

How would you measure whether Facebook's Like feature is a success? Explain what Likes are meant to achieve, define what success means, and lay out th...

Analytics & ExperimentationMetrics & KPIsCausal Inference
0
0
5 people solved
Dec 20, 2023
Google logo
Google
Medium
Product Manager

Pick the Signature Feature That Sets a New Music Streaming Service Apart

You are the product manager for a music subscription service that is about to launch to consumers. People who might sign up can already pick among est...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
1
0
11 people solved
Mar 11, 2026
Upstart logo
Upstart
Medium
Data Scientist

Manipulate data in R with dplyr joins and windows

Using R and dplyr, answer the following using these small tables (dates are ISO strings): transactions(user_id, order_id, order_date, channel, amount)...

Data Manipulation (SQL/Python)
2
0
23 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Data Scientist

Derive L1 vs L2 effects with correlation

Multicollinearity: Ridge vs LASSO vs Elastic Net Setup - Two standardized predictors x1 and x2 with corr(x1, x2) = 0.99. - X'X = [[100, 99], [99, 100]...

Statistics & Math
6
0
78 people solved
Oct 13, 2025
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