CAT QA covers 22 questions in the exam and number system is the fundamental section covered under CAT Quantitative Aptitude. This section covers important topics such as number properties, base system, unit digits, last digits, divisibility rules, HCF/LCM, remainders (modular arithmetic, cyclicity), factorials and theorems. Quantitative Ability is one of the major sections covered in the Common Admission Test and getting focused on each and every section of QA leads to an increment in the final percentile. Due to foundational topic, number system will be of a great advantage in any examination if focused properly. Although, speed up with the numbers in the CAT exam will be an additional benefit rather using calculators to perform manual calculations. This blog is the comprehensive guide which deals with the importance of covering Number System, cover what you will get inside the CAT Number System formula book PDF and candidates can download the PDF free to streamline the CAT 2026 preparation.
Join iQuanta’s diversified student community for free and prepare with other 4.1L+ peers. Get access to 24*7 doubt-solving, mentorship, free webinars, etc all at one single platform.
Why Number System Is the Backbone of CAT Quantitative Aptitude?
Although, number system covers 1-3 questions approx. every year in the CAT exam. This works as a foundation to speed up the numbers by learning different properties, theorem, divisibility rules and factorials. The main aim to achieve for scoring amazing CAT percentile is speed as well as accuracy. With the help of number system, candidate will able to crack their speed with the number or calculation. This covers less questions in the exam in comparison to other sections like Arithmetic, Algebra, but still can be preferred due to its basics which is helpful everywhere. A single number itself makes a great impact in the competitive examinations because CAT 2026 is the next milestone for the candidates and they should not ignore any section while aligning their preparation for Quants.
What You’ll Get Inside the Number System Formula Book PDF?
Candidates will able to cover important number properties, facts or figures that will really helpful you to tackle questions in CAT 2026 exam.
- Important facts related to the Number System
- Divisibility Rules
- Properties of factors and co-prime numbers
- Remainder Theorems
- HCF, LCM and their applications
- Index of Greatest Power
How to Download CAT 2026 Number System PDF?
Candidates can easily download the CAT 2026 Number System PDF by clicking on the button specified below. This cover Important facts related to the Number System, Divisibility Rules, Properties of factors and co-prime numbers, Remainder Theorems, HCF, LCM and their applications and Index of Greatest Power.
Topics to Be Covered in the Number System
| Category | Topics Covered |
| Fundamentals of Numbers | Basics of Numbers, Properties of Numbers |
| Divisibility Concepts | Divisibility and Factors, Divisibility Rules, Basic Divisibility Rules |
| HCF & LCM | Highest Common Factor (HCF), Lowest Common Multiple (LCM) |
| Remainder Theorems | Pattern Recognition & Cyclicity of Remainders, Finding out Remainders based on Simplification |
| Advanced Number Theorems | Fermat’s Theorem, Euler’s Theorem, Wilson’s Theorem |
| Digit-Based Problems | Finding Out the Last Digit, Finding Out Last Two Digits, Number of Trailing Zeroes |
| Algebraic Applications | Binomial Theorem |
| Simplification Techniques | Simplifying the Dividend (Single and/or Multiple Divisors) |
| Number Systems | Base Systems, Conversion of Bases |
| Operations in Different Bases | Addition, Subtraction & Multiplication in Different Bases |
Conclusion
CAT 2026 is now one of the important milestone for the candidates who are planning to take admission in top IIMs or B-schools in the country. Number System is the vital part of Quantitative Aptitude that covers the quick solutions of important topics like number properties, base system, unit digits, last digits, divisibility rules, HCF/LCM, remainders (modular arithmetic, cyclicity), factorials and theorems.
