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 ScientistEvaluate Auto-Play Impact with Key Metrics and Experiment Design
Evaluate Auto-Play Impact With Metrics and Experiment Design A streaming platform is considering auto-playing the next episode to improve engagement. ...
Analytics & Experimentation
26
0
53 people solved
Jul 12, 2025
Medium
Data ScientistAssess Cultural Fit and Leadership Potential in Candidates
Behavioral Phone Screen: Cultural Fit and Leadership Potential You are in a Data Scientist phone screen focused on cultural fit, leadership potential,...
Behavioral & Leadership
21
0
79 people solved
Jul 12, 2025
Medium
Data ScientistCalculate Total Interactions for Each Product
Interactions +----------+-----------+------------+--------------+ | buyer_id | seller_id | product_id | interactions | +----------+-----------+-------...
Data Manipulation (SQL/Python)
56
0
183 people solved
Jul 12, 2025
Hard
Data ScientistAnalyze Data to Boost Group Post Comment Rates
Analytics Plan to Increase Group Post Comment Coverage A social shopping platform wants to increase the percentage of group posts that receive at leas...
Analytics & Experimentation
69
0
178 people solved
Jul 12, 2025
Hard
Data ScientistDetermine Group Call Feature Need and Evaluation Methods
Determine Need and Evaluation Methods for Group Calling You are the product analyst for a messaging platform considering a group-calling feature. You ...
Analytics & Experimentation
94
0
260 people solved
Jul 12, 2025
Medium
Data ScientistGenerate Friendship List with Acceptance Dates Using Pandas
friend_events | requester_id | accepter_id | request_date | accept_date | |--------------|-------------|--------------|-------------| | 1 |...
Data Manipulation (SQL/Python)
56
0
7 people solved
Jul 12, 2025
Medium
Data ScientistAnalyze New Shops' Activity Compared to Existing Ones
shops +---------+------------+---------------+ | shop_id | created_at | category | +---------+------------+---------------+ | 1 | 2024-01-0...
Data Manipulation (SQL/Python)
53
0
10 people solved
Jul 12, 2025
Medium
Data ScientistDefine Success Metrics for Euro-Chat Customer-Service Chatbot
Success Metrics for the Euro-Chat Customer-Service Chatbot An e-commerce company deploys a customer-service chatbot called euro-chat to handle B2C sup...
Analytics & Experimentation
18
0
41 people solved
Jul 12, 2025
Medium
Data ScientistCalculate January-2024 SF Promotion Impact Using SQL Queries
campaign_users +---------+-----------+ | user_id | treatment | +---------+-----------+ | 1001 | control | | 1002 | test | | 1003 | con...
Data Manipulation (SQL/Python)
7
0
7 people solved
Jul 12, 2025
Medium
Data ScientistInvestigate Causes of Cold Meal Deliveries
Investigate and Reduce Cold Food Deliveries A delivery service is receiving customer complaints that meals arrive cold. You need to investigate the ro...
Analytics & Experimentation
43
0
247 people solved
Jul 12, 2025
Medium
Data ScientistAnalyze DoorDash Orders: High-Frequency Customers, Top Spenders, MoM Sales & Bottom-Percentile Reach
orders +-------------+-------------+---------------+---------------------+ | delivery_id | customer_id | restaurant_id | order_place_time | +------...
Data Manipulation (SQL/Python)
80
0
132 people solved
Jul 12, 2025
Hard
Data ScientistMeasure Impact of Updated Rider ETA Algorithm
Measure the Impact of an Updated Rider ETA Algorithm A ride-hailing company updated the rider ETA prediction shown before a rider requests a trip. The...
Analytics & Experimentation
51
0
122 people solved
Jul 12, 2025
Medium
Data ScientistExplore Behavioral Growth and Adaptability in Data Science.
Behavioral Deep-Dive: Growth, Agility, Cross-Team Support, and Inclusion You are in a behavioral and leadership round for a Data Scientist role. The i...
Behavioral & Leadership
113
0
386 people solved
Jul 12, 2025
Hard
Data ScientistUncover User Needs for Group Calling Effectively
Uncover User Needs and Measure Group Calling Impact You are the product analyst for a messaging platform planning to introduce group calling. You need...
Analytics & Experimentation
113
0
305 people solved
Jul 12, 2025
Medium
Data ScientistDemonstrate Leadership and Ownership in Energy Analytics Role
Behavioral Interview: Ownership, Resume Walkthrough, and Energy Analytics Motivation You are interviewing for a Data Scientist role on an Amazon-style...
Behavioral & Leadership
23
0
87 people solved
Jul 12, 2025
Medium
Data ScientistClassify Reviewers Using Bayesian Probability for Accuracy Analysis
Classify Reviewers With Bayesian Probability You are auditing reviewers who may be lazy or careful. Each reviewer completes n gold-standard review tas...
Machine Learning
92
0
255 people solved
Jul 12, 2025
Easy
Data ScientistDetermine Posterior Probability of Bad User Prediction
Posterior Probability for a Bad-Actor Classifier You are evaluating a binary classifier that flags bad actors among users. Given: - 5% of users are tr...
Statistics & Math
34
0
136 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
243 people solved
Jul 12, 2025
Medium
Data ScientistAnalyze Streaming Data with SQL for Monthly Trends
minute_streamed +---------------------+------------------+------------+--------------------+ | time_minute | streamer_username| category | c...
Data Manipulation (SQL/Python)
100
0
262 people solved
Jul 12, 2025
Medium
Data ScientistEstimate Lift and Significance in Facebook Ad Campaigns
Estimate Lift and Significance in Facebook Ad Campaigns An advertiser is running campaigns on Facebook and wants to know whether ads increased convers...
Statistics & Math
12
0
82 people solved
Jul 12, 2025