Interview Questions
Practice the exact questions companies are asking right now.
Questions
10.0k
Companies
520
Updated
08.21.2026
10.0k Questions 520 Companies08.21.2026
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_
"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"
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
"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."
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
"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."
CarlosFull Stack, Shopify
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
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."
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
"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."
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
"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."
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
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
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
Role
Medium
Data ScientistResolve Conflicts and Convince Skeptical Stakeholders Effectively
Resolve Conflicts and Convince Skeptical Stakeholders Effectively Scenario You are an IC-level data scientist (IC5-or-below) working on fast-paced, cr...
Behavioral & Leadership
71
0
283 people solved
Aug 4, 2025
Easy
Data ScientistExplain Bayes’ Theorem and P-Value in Decision-Making
Explain Bayes’ Theorem and P-Value in Decision-Making Statistics Fundamentals: Bayes' Theorem and p-Values Context Stakeholders want clear, decision-f...
Statistics & Math
24
0
123 people solved
Aug 4, 2025
Medium
Data ScientistExplain Causal-Inference Techniques in Your Machine Learning Project
Explain Causal-Inference Techniques in Your Machine Learning Project Technical Deep-Dive: ML Project With Causal Inference Prompt Walk me through one ...
Machine Learning
14
0
74 people solved
Aug 4, 2025
Hard
Data ScientistEvaluate Top-Dasher Program's Benefits and Challenges
Evaluate Top-Dasher Program's Benefits and Challenges Scenario DoorDash is considering several driver-facing initiatives: a Top-Dasher status, cash in...
Analytics & Experimentation
77
0
246 people solved
Aug 4, 2025
Medium
Data ScientistInfluence Stakeholders Without Authority: Strategies and Outcomes
Influence Stakeholders Without Authority: Strategies and Outcomes Scenario Meta Data Scientist onsite behavioral & leadership loop. The interviewer pr...
Behavioral & Leadership
23
0
104 people solved
Aug 4, 2025
Easy
Data ScientistAssess Probability of Heads in Coin Tosses
Assess Probability of Heads in Coin Tosses Probability with Coin Tosses and the Normal Distribution Context Onsite data scientist screening question a...
Statistics & Math
28
0
88 people solved
Aug 4, 2025
Medium
Data ScientistEvaluate Metrics and Randomization for Onboarding Tutorial Change
Evaluate Metrics and Randomization for Onboarding Tutorial Change Scenario A single step within Confluent’s multi-step user-onboarding tutorial was mo...
Analytics & Experimentation
88
0
289 people solved
Aug 4, 2025
Medium
Data ScientistHow to Update Bayesian Model for Concept Drift?
How to Update Bayesian Model for Concept Drift? Beta–Binomial CTR Model: Prior, Likelihood, Posterior, Smoothing, Intervals, and Drift Context You are...
Statistics & Math
87
0
286 people solved
Aug 4, 2025
Hard
Data ScientistDesign an ML Model for Interview Recommendation Pipeline
Design an ML Model for Interview Recommendation Pipeline Scenario You are designing and deploying an ML model that mirrors a real-world recommendation...
Machine Learning
71
0
156 people solved
Aug 4, 2025
Hard
Software Engineer LockedReturn Top K Open Businesses
This question evaluates a candidate's ability to perform filtering and multi-criteria ranking, requiring correct handling of an open-status filter and...
Coding & Algorithms
8
0
98 people solved
May 10, 2026
Medium
Analytics EngineerImplement most frequent key without using max()
You are given the following Python class skeletons. The Parent class precomputes: - self.l: the original list - self.lf: a set of the stringified item...
Coding & Algorithms
6
0
68 people solved
Dec 30, 2025
Hard
Software Engineer LockedCompute Balances and Minimize Settlements
This question evaluates transactional data aggregation and net-balance computation skills alongside combinatorial optimization for minimizing settleme...
Coding & Algorithms
10
0
86 people solved
Feb 27, 2026
Medium
Data ScientistNew GradDescribe Conflict and Impact
Prepare strong answers for the following behavioral and project deep-dive questions for a data scientist role: 1. Tell me about a time you went beyond...
Behavioral & Leadership
10
0
73 people solved
Feb 27, 2026
Medium
Data ScientistNew Grad LockedImplement FizzBuzz
This question evaluates a candidate's ability to implement basic control flow, use modulo operations, iterate over sequences, and reason about time an...
Coding & Algorithms
4
0
53 people solved
Feb 27, 2026
Medium
Machine Learning Engineer LockedImplement an LRU cache
This question evaluates competency in designing efficient key-value caching mechanisms, enforcing capacity constraints and eviction policies while mai...
Coding & Algorithms
23
0
351 people solved
Feb 27, 2026
Medium
Software EngineerIdentify and fix deadlock in locked code
Identify and fix deadlock in locked code Multithreaded Deadlock: Diagnose and Fix Context You have concurrent code that acquires multiple locks and oc...
System Design
15
0
146 people solved
Aug 1, 2025
Medium
Software EngineerIntroduce background and choose target team
Introduce background and choose target team Behavioral HR Screen: Software Engineer Prompt Prepare concise, structured responses to the following: 1. ...
Behavioral & Leadership
13
0
110 people solved
Aug 1, 2025
Hard
Data ScientistAnalyze profits under random walk and Brownian motion
Analyze profits under random walk and Brownian motion Random-Walk Trading Rules: Expectation and Variance Setup - Let (S_t) be a simple random walk fo...
Statistics & Math
10
0
96 people solved
Aug 1, 2025
Medium
Software Engineer LockedFind Largest Adjacent Stock Price Change
This question evaluates algorithmic problem-solving and data-manipulation skills, specifically date-based sorting, computing signed versus absolute ad...
Coding & Algorithms
2
0
16 people solved
May 9, 2026
Medium
Software Engineer LockedImplement Price-Time Order Matching
This question evaluates understanding of limit-order book mechanics, priority-based matching, stateful stream processing, and data-structure managemen...
Coding & Algorithms
6
0
36 people solved
May 9, 2026