Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.8k
Companies
511
Updated
08.16.2026
9.8k Questions 511 Companies08.16.2026
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 ScientistCalculate Probabilities for Mixed Reviewer Types
Probabilities for Mixed Reviewer Types Two types of reviewers exist in a marketplace: - Lazy reviewers are 20% of reviewers and always give good revie...
Statistics & Math
84
0
220 people solved
Jul 12, 2025
Medium
Data ScientistCalculate Expected Meetings in Randomly Assigned Rooms
Expected Meetings in Randomly Assigned Rooms You are solving two probability questions about room occupancy. Constraints & Assumptions - In the first ...
Statistics & Math
85
0
242 people solved
Jul 12, 2025
Easy
Data ScientistCalculate Expected Impressions and Probability for Users
Expected Impressions From Random Ad Allocation There are X distinct users and Y ad impressions. Each impression is assigned independently and uniforml...
Statistics & Math
17
0
57 people solved
Jul 12, 2025
Hard
Data ScientistDesign a Restaurant Recommendation System for Food Apps
Design a Restaurant Recommendation System for a Food-Ordering App You are designing an end-to-end recommendation system that suggests restaurants to u...
Machine Learning
34
0
102 people solved
Jul 12, 2025
Medium
Data ScientistImplement Python Function for Statistical Test P-Values
Scenario You need a utility that calculates p-values for one-sided and two-sided statistical tests. Question Write a Python function compute_p_value(s...
Coding & Algorithms
14
0
48 people solved
Jul 12, 2025
Medium
Data ScientistResolve Team Conflicts to Improve Delivery Efficiency
Behavioral Interview: Resolve Team Conflict and Improve Delivery You are in a Behavioral and Leadership interview for a Data Scientist role. The inter...
Behavioral & Leadership
32
0
105 people solved
Jul 12, 2025
Medium
Data ScientistDetermine Product Buyer Count and Interaction Percentage
interactions +-----------+----------+------------+----+------------+ | seller_id | buyer_id | product_id | li | create_date| +-----------+----------+-...
Data Manipulation (SQL/Python)
13
0
35 people solved
Jul 12, 2025
Medium
Business Intelligence EngineerAnalyze Seller Compliance and Customer Purchase Patterns
SELLER_STATUS +-----------+------------+-----------+ | seller_id | date | status | +-----------+------------+-----------+ | 1 |2019-0...
Data Manipulation (SQL/Python)
5
0
19 people solved
Jul 12, 2025
Medium
Business Intelligence EngineerCalculate Rolling 7-Day Sum of Answers by Device
ANSWERS +------------+--------+---------+ | date | device | answers | +------------+--------+---------+ | 2019-01-01 | echo | 10 | | 2019...
Data Manipulation (SQL/Python)
11
0
42 people solved
Jul 12, 2025
Medium
Business Intelligence EngineerIdentify Employees with Invalid Department References
EMPLOYEE +-----+-----+--------+ | eid | did | ename | +-----+-----+--------+ | 1 | 10 | Alice | | 2 | 11 | Bob | | 3 | 99 | Carol | +--...
Data Manipulation (SQL/Python)
7
0
14 people solved
Jul 12, 2025
Medium
Software EngineerMerge Two Insertion Diffs in Linear Time
A text-editing system represents changes to a document as insertion diffs. An insertion diff is a set of (position, value) pairs, where each pair mean...
Coding & Algorithms
1
0
19 people solved
Jul 11, 2025
Easy
Data EngineerCompute unique duration by merging intervals
Problem You have an autonomous-driving clip dataset where each row represents a time interval from a driving run. Table: clips | column | type | descr...
Data Manipulation (SQL/Python)
7
0
83 people solved
Jul 8, 2025
Medium
Data ScientistHandle merchant complaint about excessive demand
Handle a Merchant Complaint About Excessive Demand A merchant complains that DoorDash is sending more demand than their store can handle. They say the...
Behavioral & Leadership
8
0
61 people solved
Jul 7, 2025
Hard
Data Scientist LockedDefine metrics for new market expansion success
DoorDash new-market expansion analytics prompt covering marketplace health metrics, demand and supply diagnostics, guardrails, 6-month evaluation plan...
Analytics & Experimentation
13
0
101 people solved
Jul 7, 2025
Medium
Data ScientistFind orders from bottom-quartile revenue restaurants
SQL Question You want to identify orders coming from restaurants whose total revenue is in the bottom 25th percentile. Assume the following tables: re...
Data Manipulation (SQL/Python)
5
0
100 people solved
Jul 7, 2025
Hard
Product ManagerLaunching Alexa in a New-Language Market
Product Case: Launch Alexa in a New Language Market You are the Product Manager for Alexa and must launch Alexa in a country where the primary languag...
Product / Decision Making
8
0
36 people solved
Jul 4, 2025
Hard
Product ManagerAmazon New-Service Launch Cases
Amazon New-Service Launch Cases You are asked to outline how Amazon could launch three distinct products: a restaurant table-booking app, a flower-del...
Product / Decision Making
9
0
64 people solved
Jul 4, 2025
Medium
Product ManagerHome Depot Plant-Growth Product Design
Home Depot Plant-Growth Product Design You are a Product Manager at Home Depot. Design a product that helps customers successfully grow their own plan...
Product / Decision Making
13
0
56 people solved
Jul 4, 2025
Medium
Product ManagerProduct Critique & Improvement
Product Critique and Improvement Case Choose a product you genuinely admire but that still has clear shortcomings. Give a structured critique focused ...
Product / Decision Making
14
0
54 people solved
Jul 4, 2025
Medium
Product ManagerPricing Splunk’s New Service
Pricing Splunk's New B2B Service You are a Product Manager evaluating how to price a new observability or security analytics service for a mid-size te...
Product / Decision Making
11
0
64 people solved
Jul 4, 2025