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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026

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>Build a 30-day plan from PracHub's Meta SWE questions.

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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
Capital One logo
Capital One
Easy
Data Scientist Locked

Compare average unit profit under mix shift

This question evaluates competency in basic statistics and arithmetic applied to unit economics, specifically understanding weighted averages and sale...

Statistics & Math
4
0
31 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Compute posterior and event counts in fraud screen

Fake-Account Screening with Threshold on 5 Signals You are designing a rule-based screener that flags an account if at least k of 5 binary signals fir...

Statistics & Math
2
0
46 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Critique a product interface and propose fixes

Product Thinking: Heuristics, Accessibility, Redesign, and Validation Prompt Pick one digital product you use daily (web or mobile). Identify: - One s...

Behavioral & Leadership
4
0
47 people solved
Oct 13, 2025
Capital One logo
Capital One
Easy
Data Scientist Locked

Match prior-year profit with new fixed costs

This question evaluates cost–volume–profit analysis, unit economics, and algebraic modeling of fixed versus variable costs in a multi-product sales mi...

Statistics & Math
3
0
28 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist Locked

Identify and validate risky assumptions

This question evaluates experimental design, causal inference, and business-analytics competencies for a Data Scientist by testing the ability to iden...

Analytics & Experimentation
3
0
34 people solved
Oct 13, 2025
Hard
Data Scientist Locked

Decide launch with p=0.10 at alpha 0.05

This question evaluates a data scientist's competency in statistical inference and experiment decision-making, including frequentist hypothesis testin...

Statistics & Math
1
0
24 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Hard
Data Scientist Locked

Design and analyze email deliverability experiment

This question evaluates a data scientist's competency in experimental design, causal inference, sequential testing (frequentist and Bayesian), instrum...

Analytics & Experimentation
7
1
75 people solved
Oct 13, 2025
Tubi logo
Tubi
Hard
Data Scientist

Determine A/B test sample size drivers

A/B Test Sample Size With Variations and Overdispersed Metric Case You are planning a two‑arm A/B test on a binary conversion metric with: - Baseline ...

Analytics & Experimentation
3
0
47 people solved
Oct 13, 2025
TikTok logo
TikTok
Hard
Data Scientist

Use DiD for staggered treatment adoption

Staggered DiD for a Weekly RPU Rollout (50 Regions, 2025-06-01 to 2025-08-15) Context and assumptions: - You have panel data at the region-week level ...

Statistics & Math
3
0
58 people solved
Oct 13, 2025
Atlassian logo
Atlassian
Medium
Machine Learning Engineer Locked

Compute inverse-depth weighted sum of a nested list

This question evaluates competency in working with nested data structures and depth-based aggregation, measuring the ability to reason about hierarchi...

Coding & Algorithms
5
0
47 people solved
Oct 11, 2025
DoorDash logo
DoorDash
Medium
Data Scientist Locked

Diagnose rising cold-food complaints and choose metrics

This question evaluates a data scientist's diagnostic analytics skills, including hypothesis generation, causal inference, metric engineering, and A/B...

Analytics & ExperimentationMetric DiagnosticsExperiment Design (A/B Testing)
5
0
91 people solved
Sep 25, 2025
Gts logo
Gts
Medium
Data Scientist Locked

Analyze duplicating data in linear regression

This question evaluates understanding of linear regression theory and statistical inference, specifically how duplicating observations affects OLS coe...

Machine Learning
5
0
37 people solved
Sep 18, 2025
DoorDash logo
DoorDash
Hard
Software Engineer

Explain conflict resolution and growth

Behavioral & Leadership: Conflict, Mistake, and Project Deep Dive To assess collaboration, ownership, and technical leadership, answer the following t...

Behavioral & LeadershipConflict & CollaborationProject Deep Dive
4
0
87 people solved
Sep 6, 2025
TikTok logo
TikTok
Easy
Data Scientist Locked

How would you measure misinformation impact and recommendation bias?

This question evaluates a data scientist's analytics and experimentation competencies — including metric and diagnostic design, sampling and labeling ...

Analytics & Experimentation
4
0
68 people solved
Aug 30, 2025
Morgan Stanley logo
Morgan Stanley
Medium
Data Scientist Locked

Answer basic probability and statistics questions

This question evaluates core probability and statistics competencies, including interpretation of Poisson rate parameters from PMF shapes, identificat...

Machine Learning
5
0
54 people solved
Aug 23, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Define and estimate prevalence of unhealthy users

This question evaluates a data scientist's ability to operationalize an "unhealthy user" metric and compute its prevalence from session duration and d...

Analytics & Experimentation
4
0
43 people solved
Aug 17, 2025
Meta logo
Meta
Hard
Data Scientist Locked

How would you measure shop-ads promotion success?

This question evaluates a data scientist's competency in metrics design, experimental evaluation, and causal inference for ads ranking systems, includ...

Analytics & Experimentation
1
0
31 people solved
Aug 10, 2025
Adobe logo
Adobe
Medium
Machine Learning Engineer

Discuss resume and behavioral scenarios

Discuss resume and behavioral scenarios Behavioral & Leadership: Resume Walkthrough and Situational Prompts (Machine Learning Engineer — Onsite) Conte...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
6
0
80 people solved
Aug 9, 2025
Uber logo
Uber
Hard
Data Scientist

Evaluate New Model's Impact on Rider and Driver Experience

Evaluate New Model's Impact on Rider and Driver Experience Airport Pickups ETA Model: Evaluation and Experiment Design Context A new model predicts ri...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
12
0
88 people solved
Aug 4, 2025
Capital One logo
Capital One
Medium
Data Scientist

Determine Revenue and Cost Components for Credit-Card Issuer

Determine Revenue and Cost Components for Credit-Card Issuer Credit-Card Issuer Unit Economics and Break-even Analysis Scenario A card issuer is consi...

Analytics & Experimentation
4
0
42 people solved
Aug 4, 2025
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