Other Interview Questions
Practice the exact questions companies are asking right now.
"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."
"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."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"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."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"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."
"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."
"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."
"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."
"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."
Return the k-th row of Pascal-like triangle
Problem Given an integer rowIndex (0-indexed), return the rowIndex-th row of Pascal’s triangle. Pascal’s triangle is defined as: - Row 0 is [1] - Each...
Compute total after discounting most expensive item
Problem You are given: - An array prices of length n, where prices[i] is the price of the i-th item. - An integer discountPercent (0 to 100). A promot...
Design a hybrid marketplace fraud system
Design a Fraud Detection System for a Marketplace and Profile Credentials Context You are a data scientist at a two‑sided marketplace where users can ...
Diagnose and fix linear regression violations
Given a linear model y = Xβ + ε on 10,000 observations: (a) State all Gauss–Markov assumptions and which are needed for BLUE vs inference. (b) Show wh...
Predict job changes month by month
Predict Monthly Job-Change Risk (Discrete-Time Survival Setup) Context You are building a monthly model to predict the probability that a LinkedIn mem...
Clean up all Docker resources
Docker: Cleanup Task You are given a machine with Docker installed. Your task is to fully clean the Docker environment using Docker CLI commands so th...
Simulate via inverse transform and Gibbs
Inverse transform: (a) Derive an algorithm to simulate from the Logistic(μ, s) distribution using its CDF and inverse CDF; show how to obtain samples ...
Solve window-function SQL without joins
You must use only window functions (no JOINs). CTEs are allowed. Given the schemas and tiny samples below, write SQL for each sub-question and explain...
Compute counts and pacing for verbal section
Verbal Section Allocation and Time Optimization You are designing a 15-minute verbal section (900 seconds total) with 19 questions across four subtype...
Prove reservoir sampling correctness
Design an algorithm to sample k items uniformly at random from a stream of unknown and potentially massive length N, using O(k) memory and one pass. (...
Design an A/B test for a Celebrate reaction
Experiment Design: Adding a "Celebrate" Reaction to WeChat Moments Context WeChat Moments is a friend-based social feed with posting, viewing, and rea...
Decide goal under ambiguity
Choose the Primary Goal for a New Subscriber-Only Benefit You are the PM/data lead for a subscription product planning a new subscriber-only benefit. ...
Explain motivations, customer ownership, mentoring, and culture fit
1) Why are you leaving your current company? Answer in <90 seconds, avoid negativity, and tie your reason to specific growth you seek (e.g., owning an...
Evaluate and select K in K-means
K-means Clustering: Concepts, Initialization, Model Selection, Preprocessing, and Business Validation Context: You are clustering customer data with n...
Compare trees, RF, and gradient boosting
Decision Trees, Random Forests, and Gradient-Boosted Trees You are interviewing for a Data Scientist role and are asked to compare common tree-based m...
Detect clickbait without labels, then supervise
Detecting Clickbait Ads Without Labeled Data Context You are asked to detect clickbait ad creatives when there is no labeled training data. You have i...
Separate demand from supply for jeans
Scenario You are a Data Scientist at a multi-category marketplace. The Jeans category is underperforming. You must diagnose whether the primary bottle...
Design metrics and experiment
Context You are the data scientist designing success metrics and an experiment for a new subscriber-only feature in a consumer subscription product (e...
Explain RF/analog IC interview fundamentals
You are interviewing for an RF/analog IC design role. Answer the following conceptual questions (no code required). Assume you can introduce any reaso...
Design metrics resilient to data quality
Design a robust metric and compute it using only window functions (no JOINs) to show how data-quality issues change conclusions. Schema: payments_raw(...