IBM Interview Questions
Practice 16 real interview questions from IBM. Covers Coding & Algorithms, Behavioral & Leadership, Analytics & Experimentation, Machine Learning. For roles including Software Engineer, Data Scientist.
"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"
"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"
"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."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"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."
Estimate free-trial conversion probability
Context A product offers a free trial. You are asked: “What is the probability of conversion for a group of people who started a free trial?” Data (as...
Design a multithreaded CPU 1D convolution
Question Design and implement a multithreaded CPU version of the valid 1‑D convolution. Valid convolution produces an output of length M = N − K + 1, ...
Describe building statistical vs ML models
You’re interviewing for a Data Scientist internship on a marketing analytics team. Tell a story about a project where you built (a) a statistical mode...
Design a lead-scoring model
Question You are interviewing for a Data Scientist role on a marketing/growth team. Sales has limited outreach capacity, so the business wants a lead-...
How would you use generative AI at work?
What are your thoughts on using generative AI tools at work? Describe: - Where you would use them to improve productivity/quality - Where you would av...
Explain CI/CD, Kubernetes delivery, and troubleshooting
You are interviewing for a DevOps/SRE-style role. Answer the following practical questions: 1) What is CI/CD? Which CI/CD tools have you used and why?...
Compute minimum rooms for meeting schedule
This question evaluates a candidate's competency in interval-based scheduling and resource allocation, assessing understanding of overlapping time int...
Write SQL to compute max and min marks
Tables marks | column | type | notes | |---|---|---| | student_id | INT | primary key | | marks | INT | not null | Task Write a SQL query that returns...
Describe open-source contribution experience
Question What is your experience contributing to open-source projects? Walk the interviewer through your background in detail, covering: 1. Projects a...
Implement valid 1-D convolution with bias
Question Implement a "valid" 1-D convolution function in the cross-correlation sense. Given an input array of numbers, a kernel (filter) array of numb...
How do you detect and fix multicollinearity?
In a regression-style model (e.g., linear regression or logistic regression) you suspect multicollinearity among features. 1) What is multicollinearit...
Find minimum operations to make array sorted
Problem You are given an integer array a of length n. Define one operation as follows: 1. Remove the first element x = a[0]. 2. Append x to the end of...
Compute shared free time intervals
You are given schedules for multiple employees. schedules[i] is a list of busy intervals for employee i, where each interval is half-open [start, end)...
Reverse last two characters with space
This question evaluates basic string manipulation and character indexing skills, including handling of edge cases when treating input as a raw charact...
Maximize palindromic strings after character swaps
You are given an integer n and an array of n lowercase strings arr. Operation (can be performed any number of times): choose two different strings arr...
Find minimum subarray length with k distinct integers
Given an integer array arr and an integer k, find the minimum length of a contiguous subarray that contains exactly k distinct integer values. Return ...