PracHub
QuestionsExperienceLearningGuidesInterview Prep
Visa Tools

Visa Tools

Visa Sponsors

Find employers with sponsorship filings

H-1B Odds Calculator

Explore your lottery selection odds

Visa Bulletin

Monthly green-card priority dates

PracHub

Master your tech interviews with 18,000+ real questions from top companies.

Product

  • Questions
  • Learning Tracks
  • Interview Guides
  • Resources
  • Green Card Tracker
  • Premium
  • Practice with AI agents
  • For Universities
  • Careers

Browse

  • By Company
  • By Role
  • By Category
  • Topic Hubs
  • Interview Experiences
  • SQL Questions
  • Blind 75
  • AI Coding Questions
  • Compare Platforms
  • Discord Community

Support

  • support@prachub.com

Legal

  • Privacy Policy
  • Terms of Service
  • About Us

© 2026 PracHub. All rights reserved.

Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
357
Companies
980
Updated
11.10.2026
357 Questions 980 Companies11.10.2026
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
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design Restart Strategy for Oracle Solver

This question evaluates understanding of probabilistic runtime analysis and restart strategies for randomized (Las Vegas-style) solvers, including exp...

Machine LearningProbability
15
0
121 people solved
Jan 13, 2026
Headway logo
Headway
Medium
Software Engineer

Debug and extend obstacle-run statistics classes

Problem: Obstacle course run statistics (debug + implement) You are building software to track how long racers take to complete an obstacle course. Do...

Coding & AlgorithmsLow-Level Design (OOP)Debugging
41
1
317 people solved
Feb 11, 2026
Voleon logo
Voleon
Hard
Machine Learning EngineerNew Grad Locked

Explain ML and statistical modeling

This question evaluates mastery of machine learning and statistical modeling concepts including class-imbalance strategies, loss function behavior and...

Machine LearningML FundamentalsRegression & Statistical Modeling
21
1
279 people solved
Feb 15, 2026
Jane Street logo
Jane Street
Medium
Quantitative Trader

Solve queue switch and coin change puzzles

This entry contains two separate interview-style quantitative/algorithmic questions. --- 1. Queue switching decision problem You are standing in a sin...

Coding & AlgorithmsPuzzles & BrainteasersDynamic Programming
53
0
464 people solved
Oct 14, 2025
Jane Street logo
Jane Street
Hard
Software Engineer

Design sequential reveal classification and policy

FashionMNIST: Row-wise Reveal Evaluation, Reward-Optimal Masking, Augmentation, and Early Exit Context You have a trained CNN classifier for FashionMN...

ML System DesignComputer VisionModel Evaluation
62
0
545 people solved
Sep 6, 2025
Roblox logo
Roblox
Easy
Data ScientistIntern

Implement four DS coding tasks

You are completing a CodeSignal-style assessment (Python or R). Implement solutions for the following four independent questions. 1) Two-sample z-test...

Coding & AlgorithmsCausal InferenceHypothesis Testing
16
0
323 people solved
Oct 18, 2025
Microsoft logo
MicrosoftGoogleAmazon

Also asked at Amazon, Meta, Bloomberg

Medium
Software Engineer

Compute the Chance of Finishing below a Score Limit

Problem Start at 0 points. While the score is below k, independently draw a uniformly random integer from 1 through maxPts and add it. Stop as soon as...

Coding & AlgorithmsDynamic ProgrammingProbability
1
0
9 people solved
Two Sigma logo
Two Sigma
Hard
Data Scientist

Predict Citi Bike Demand at a Specific NYC Station

Citi Bike is New York City's bike-share system: riders pick up a bike at one docked station and drop it off at another. Operations needs to know how m...

ML System DesignTime Series & ForecastingFeature Engineering
37
1
286 people solved
Nov 28, 2025
Jane Street logo
Jane Street
Medium
Software Engineer

Calculate win chance in three-player dice game

Probability of Winning with Rerolls on Ties Setup - Three players: A (you), B, and C. - A fair six-sided die is used. - B and C have already rolled an...

Statistics & MathProbability
98
1
741 people solved
Sep 6, 2025
Lyft logo
Lyft
Medium
Data Scientist Locked

Compute Commuter Ride Probabilities

This question evaluates competency in probability theory—specifically conditional probability, marginalization, Bayesian inversion, and expectation of...

Statistics & MathProbability
17
0
140 people solved
May 28, 2026
ByteDance logo
ByteDance
Medium
Data Scientist

Calculate Triangle Probability From Broken Stick

A stick of length 1 is broken into three pieces by choosing two cut points independently and uniformly at random along the stick, then sorting the two...

Statistics & MathProbability
14
0
109 people solved
Apr 19, 2026
Optiver logo
Optiver
Easy
Data Scientist

Compute probabilities and expectations in random processes

This is a rapid-fire probability and expectation round: a sequence of short, self-contained brain-teasers solved on a whiteboard. The interviewer expe...

Statistics & MathProbabilityPuzzles & Brainteasers
34
0
409 people solved
Nov 19, 2025
Optiver logo
Optiver
Hard
Data Scientist Locked

How to rank statements by likelihood

This question evaluates proficiency in data interpretation, probabilistic reasoning, and statistical literacy for ranking statement likelihoods from v...

Machine LearningProbabilityPuzzles & Brainteasers
30
0
328 people solved
Feb 3, 2026
Two Sigma logo
Two Sigma
Hard
Data Scientist Locked

Derive correlation bounds and omitted-variable bias

This question evaluates understanding of multivariate correlation structure and linear regression properties, focusing on feasible ranges and construc...

Machine LearningRegression & Statistical ModelingProbability
22
0
162 people solved
Jan 6, 2026
Apple logo
Apple
Medium
Software EngineerIntern

Explain SystemVerilog verification concepts and write constraints

Answer the following SystemVerilog / DV questions. Use short explanations and, where appropriate, show small SV code snippets. 1) Concurrency: Explain...

Software Engineering FundamentalsProgramming LanguagesConcurrency
10
0
174 people solved
Feb 9, 2026
Capital One logo
Capital One
Medium
Data Scientist

Determine Claim Rate for Breakeven in Insurance Portfolio

Weather-Insurance Portfolio Profitability You price a 12-month weather insurance policy. Customers pay premiums upfront for the year. Each policy can ...

Statistics & MathBusiness Case AnalysisProbability
90
0
275 people solved
Jul 12, 2025
Squarepoint logo
Squarepoint
Medium
Quantitative Trader Locked

Solve Probability and Statistics Questions

This question evaluates proficiency in statistical modeling (ordinary least squares linear regression), probability theory (law of large numbers and c...

Machine LearningRegression & Statistical ModelingProbability
10
0
128 people solved
May 3, 2026
Mercor logo
Mercor
Medium
Software Engineer

Sorting Complexity: Beating O(n^2), Quicksort's Worst Case, and a Slower Sort

This is a verbal discussion about sorting, and no code is written. The interviewer starts from the observation that a straightforward insertion sort t...

Software Engineering FundamentalsSortingMath & Number Theory
9
0
71 people solved
May 1, 2026
Agoda logo
Agoda
Medium
Software Engineer

Compute triangle min path and dice stopping stats

You are given two independent interview questions. 1) Triangle minimum path sum (DP) Given a triangular array triangle with n rows, find the minimum p...

Coding & AlgorithmsDynamic ProgrammingProbability
15
0
141 people solved
Nov 14, 2025
Pinterest logo
Pinterest
Medium
Data Scientist Locked

Implement Jackknife and Random Choice

This question evaluates understanding of statistical resampling (jackknife), probabilistic sampling algorithms including with- and without-replacement...

Coding & AlgorithmsSampling & EstimationProbability
17
0
185 people solved
Jan 11, 2026
Previous1...789...18Next
Popular Categories
SQLBlind 75
Daily Quest

Sign in to earn XP for every problem you solve.

Choose your next challenge

All learning

Blind 75

75 free coding problems to build your foundations, with hints, explanations, and a progress checklist.

Arrays · Graphs · Dynamic programming

Explore Blind 75

ML System Design

Work through the decisions behind machine learning systems, from data to serving.

Data · Models · Evaluation

Explore the course

System Design Interview

Practice reasoning about architecture, scale, and the tradeoffs that shape a system.

Architecture · Scale · Tradeoffs

Explore the course

Explore by company

All companies
  • Meta
  • Google
  • Amazon
  • Apple
  • Microsoft
  • Netflix
  • Capital One
  • TikTok
  • DoorDash
  • Uber
  • Coinbase
  • Airbnb
  • LinkedIn
  • Salesforce
  • Snapchat
  • Spotify
  • PayPal
  • Lyft
  • Pinterest
  • Anthropic
  • OpenAI
  • Databricks
  • Rippling
  • Jane Street

Explore by role

  • Data Scientist
  • Software Engineer
  • Machine Learning Engineer
  • Product Manager
  • Data Engineer
  • Data Analyst
  • Frontend Engineer
  • Backend Engineer
  • Site Reliability Engineer
  • Technical Program Manager

Explore by category

  • Blind 75
  • Coding & Algorithms
  • System Design
  • Machine Learning
  • ML System Design
  • SQL & Python
  • Analytics & Experimentation
  • Behavioral & Leadership
  • Statistics & Math
  • Product / Decision Making
  • Product Design & Strategy
  • SWE Fundamentals

Popular interview guides

  • Meta SWE
  • Meta DS
  • Meta PM
  • Google SWE
  • Google DS
  • Google MLE
  • Amazon SWE
  • Amazon DS
  • Amazon DE
  • Apple SWE
  • Apple MLE
  • Microsoft SWE
  • Microsoft DS
  • TikTok SWE
  • TikTok DS
  • Uber SWE
  • Uber DS
  • DoorDash SWE
  • DoorDash DS
  • Airbnb SWE
  • Airbnb DS
  • LinkedIn SWE
  • LinkedIn DS
  • Netflix SWE
  • Coinbase SWE
  • Capital One DS
  • OpenAI SWE
  • Anthropic SWE

Popular question categories

  • Blind 75
  • Meta Coding
  • Google System Design
  • Amazon Coding
  • Meta Analytics
  • Google ML
  • Amazon System Design
  • Capital One SQL
  • TikTok ML
  • Meta SQL
  • Uber Analytics
  • DoorDash Coding
  • Google Coding
  • Netflix System Design
  • Airbnb Analytics
  • LinkedIn SQL