Uploaded January 2026 | Updated September 2026, 2 weeks ago

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Number Theory is often called the heart of Mathematics and forms the backbone of many competitive exam problems. In this video, we build a clear conceptual foundation of Number Theory—from understanding what it truly is, to how questions should be approached strategically in exams like JEE, Olympiads, and other competitive tests.
This session is ideal for students who want to move beyond formulas and develop number sense, logical thinking, and problem-solving maturity.
⏱️ Timelines
00:00 - Idea of Divisibility
01:55 – Common Divisor
03:04 – Greatest Common Divisor
05:05 - Euclid's Algorithm for gcd(a,b)
14:10 - Euclid's Algorithm
17:07 - Questions

📌 Who should watch this video?
JEE Main & Advanced aspirants
Olympiad students
Class 9–12 Mathematics learners
Anyone looking to strengthen fundamentals of integers and problem solving
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