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Vedic Maths Sprint
5 timed questions using classic Vedic shortcuts — squaring numbers ending in 5, multiply-by-11, complements near 100, and more.
Mind Games & Puzzles
Train your brain in quick sessions
Short, focused challenges designed to sharpen mental agility.
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Interview prep
Practice tests
Browse available topics and preview what each test covers. Sign in when you are ready to start — questions adapt to your correctness and solving speed.
DSA Interview MCQs
A set of 250 multiple-choice questions on data structures and algorithms for tech company interviews. Covers complexity, arrays, strings, linked lists, stacks, queues, trees, graphs, heaps, hashing, dynamic programming, greedy algorithms, backtracking, bit manipulation, tries, Union-Find, and common interview patterns.
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Linear Algebra Interview MCQs
A set of 50 multiple-choice questions on linear algebra commonly useful for tech company interviews, especially for software, data science, machine learning, and quantitative roles.
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Linux, Ubuntu, and Amazon Linux Interview MCQs
A set of 250 multiple-choice questions on Linux/OS operations for interviews and cloud server administration. Covers Ubuntu, Amazon Linux, EC2 instances, SSH, package managers, systemd, services, processes, filesystems, networking, security, logs, storage, monitoring, Docker, and troubleshooting.
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Python Interview MCQs
A set of 250 multiple-choice questions on Python for tech company interviews. Covers Python basics, data structures, functions, OOP, exceptions, modules, iterators, generators, decorators, typing, testing, concurrency, async, performance, serialization, and security.
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System Design Interview MCQs
A set of 250 multiple-choice questions on system design for tech company interviews. Covers scalability, availability, databases, caching, queues, APIs, rate limiting, security, observability, deployment, storage, distributed systems, and design trade-offs.
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Roadmap
Learning paths
Hands-on courses for aspiring engineers. Enroll for free, track your progress, and work through lessons at your own pace.
Live course
DSA + AI Agents
Master data structures and algorithms while building real AI agents alongside each concept. New episodes every week, fully free on YouTube.
Live course
Job Ready / Career Ready Series
An end-to-end track that takes you from fundamentals to offer-ready: projects, mock interviews, resume reviews, and referrals. New episodes daily on YouTube.