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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
Meta logo
Meta
Medium
Product Manager

Facebook Feed Ad Frequency Decision: Weighing 1-in-25 vs 1-in-100 Post Spacing

You are a product manager at Meta working on the Facebook News Feed, where ads are placed among people's posts. You are asked to decide how often an a...

Product / Decision MakingGrowth & MonetizationExperiment Design (A/B Testing)
0
0
6 people solved
Mar 11, 2025
Netflix logo
Netflix
Medium
Product Manager

Netflix improvement: finding the member problem worth fixing and proving the fix works

How would you make Netflix better? Set the goal you are improving it for, choose the members you would focus on, the problem you would solve and how y...

Product Design & StrategyProduct Design & ImprovementExperiment Design (A/B Testing)
0
0
7 people solved
Feb 29, 2024
Yelp logo
Yelp
Medium
Product Manager

Product Strategy: A Touch-Free Pub Visit From Arrival to Settling the Bill

Design a contactless dining experience for pubs, taking a pub chain such as Social as the kind of venue meant. Explain what contactless should mean in...

Product Design & StrategyProduct Sense
0
0
8 people solved
Jun 11, 2024
Meta logo
Meta
Medium
Product Manager

Success Metrics for Meta's Portal Video-Calling Smart Display

You are a product manager at Meta working on Portal, the company's smart display built for video calls over Messenger and WhatsApp. How would you meas...

Analytics & ExperimentationMetrics & KPIsCausal Inference
0
0
5 people solved
Sep 15, 2025
Jefferies logo
Jefferies
Medium
Data Scientist

How to derive correlation from variances

Deriving Correlation from Variances You have two random variables X and Y with finite second moments. You are given Var(X + Y) and Var(X). Answer the ...

Statistics & Math
5
0
52 people solved
Jul 13, 2025
Amazon logo
Amazon
Medium
Software Engineer

Minimize cost & recommend movies

Question Given arrays size[] and cost[] where size[i] is the size of the i-th product and cost[i] is the cost to increase size[i] by one unit, compute...

Coding & Algorithms
23
0
102 people solved
Jul 29, 2025
Meta logo
Meta
Medium
Software Engineer

Compute longest increasing path in a matrix

Compute longest increasing path in a matrix Given an m × n integer matrix, return the length of the longest path of strictly increasing values, where ...

Coding & Algorithms
2
0
56 people solved
Jul 27, 2025
Google logo
Google
Medium
Product Manager

End-to-End Web Latency: Levers to Cut Load Times for Users Worldwide

As a product manager, you are asked how you would make the internet faster. Explain what "faster" should mean for the people using it, where the time ...

Software Engineering FundamentalsTechnical Tradeoffs for PMsNetworking
0
0
6 people solved
Dec 5, 2024
TikTok logo
TikTok
Medium
Data Scientist

Investigate Traffic Distribution Impact on Retention Decrease

A/B Test Diagnostics: Traffic Distribution and Retention Drop An A/B test changed a button color from green in control to red in treatment. The primar...

Analytics & Experimentation
100
0
215 people solved
Jul 12, 2025
TikTok logo
TikTok
Hard
Data Scientist

Design an experiment for exploratory recommendations

Experiment Design for Exploratory Recommendations You are launching an online A/B test for a new recommendation algorithm. The goal is to increase use...

Analytics & Experimentation
7
0
61 people solved
Jul 13, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluate Marketing Campaign's Click-Through Rate Effectiveness

Evaluate Marketing Campaign's Click-Through Rate Effectiveness Scenario A campaign currently shows a click-through rate (CTR) of 4.2%. Leadership asks...

Statistics & Math
13
0
111 people solved
Aug 4, 2025
TikTok logo
TikTok
Medium
Software Engineer

Format messages with paginated suffixes

You are given a message string s and an integer width w. Split s into multiple chunks, preserving character order, and append a suffix "i/n" to each c...

Coding & Algorithms
8
0
64 people solved
Jul 29, 2025
Shopify logo
Shopify
Easy
Data Scientist

Infer and justify non-trivial sequence patterns

Pattern Recognition: Next Terms and Missing Value Identify the rule governing each sequence or row and compute the missing value(s). Justify each answ...

Coding & AlgorithmsPuzzles & Brainteasers
19
1
164 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Group strings that are anagrams

This question evaluates string-processing and data-structuring competency, focusing on identifying and grouping anagrams through comparison of unorder...

Coding & AlgorithmsArrays & Strings
15
0
214 people solved
Mar 1, 2026
Meta logo
Meta
Medium
Product Manager

Product Sense: Choosing the Next Improvement for Instagram's Disappearing Stories

You are a product manager on Instagram. How would you improve Instagram Stories, the format where people share photos and short videos that disappear ...

Product Design & StrategyProduct Design & Improvement
0
0
6 people solved
Oct 27, 2023
Pinterest logo
Pinterest
Medium
Product Manager

Product strategy: use cases and a business model for a short-range human teleporter

Suppose a machine exists that can teleport a person 100 meters. What would you use it for, and how would you make money from it? Clarifying Questions ...

Product Design & StrategyGrowth & MonetizationProduct Sense
0
0
7 people solved
Oct 26, 2023
Intuit logo
Intuit
Easy
Data Scientist

Implement nth Fibonacci number

Implement nth Fibonacci number Problem Write a function that returns the n-th Fibonacci number. The Fibonacci sequence is defined as: - \(F(0)=0\) - \...

Coding & AlgorithmsDynamic Programming
10
0
114 people solved
Aug 1, 2025
Amazon logo
Amazon
Medium
Product Manager

Ownership story: stepping into work that sat beyond your formal role

Describe a time you picked up work that fell outside your job description, and explain why you took it on. `hint Draw the line first Before describing...

Behavioral & LeadershipOwnership & Execution
0
0
6 people solved
May 5, 2024
Freshworks logo
Freshworks
Medium
Product Manager

Product Design for a Business Analytics Platform: Users, MVP and Success Metrics

Design an analytics platform. Decide who it is for and which decisions it should help them make, define what the first version includes, and explain h...

Product Design & StrategyProduct Sense
0
0
5 people solved
Jul 6, 2025
Dave logo
Dave
Easy
Machine Learning Engineer Locked

Own and Resolve a Bug in Production

Prepare a production-bug story that shows impact scoping, direct ownership, reversible containment, root-cause analysis, correction, and verified reco...

Behavioral & Leadership
2
0
22 people solved
Jun 27, 2026
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