5-Days Study Plan Number System - Quantitative Aptitude for SSC CGL PDF

Introduction

This chapter on the Number System is fundamental for developing strong mathematical problem-solving skills.
The study plan is designed to help students build a deep understanding of core concepts, techniques, and applications within the number system.
By using comprehensive resources such as documents, videos, and tests, this plan ensures thorough preparation and effective learning.

Chapter Overview

Introduction to Number System
Even and Odd Numbers
Multiplication Properties of Even and Odd Numbers
Perfect Squares
Cyclicity and Factorials
Conversion to Rational Numbers
Square Root and Cube Root Formulas
Finding Remainders in Number Systems
Important Formulas and Concepts

Study Plan

Day 1: Basics and Introduction to Even & Odd Numbers

Read Introduction: Number System to understand the foundational concepts.
Watch Introduction: Even and Odd Numbers to grasp their characteristics.
Watch Even-Odd Multiplication- Number Theory to learn multiplication properties.
Make concise notes summarizing key points about even and odd numbers.

Day 2: Perfect Squares, Factorials & Cyclicity

Watch Perfect Square to understand their patterns and properties.
Read Cyclicity & Factorial: Number System to learn about factorial concepts and cyclicity.
Watch Cyclicity: Number Theory for a video explanation of cyclicity.
Watch Zeroes in a Factorial - Number Theory to explore factorial properties further.

Day 3: Important Formulas and Rational Numbers

Read Important Formulas: Number System to memorize key formulas.
Read Important Formulas: Square Root & Cube Root for root-related formulas.
Watch Conversion to Rational Numbers to understand number conversions.
Review Important Concepts: Number System to reinforce understanding.

Day 4: Remainders, Shortcut Techniques & Practice Tests

Read Number Systems: Finding Remainders to grasp remainder calculations.
Watch Shortcut Techniques: Number System for efficient problem-solving methods.
Solve Test: Number System- 1 and Test: Number System- 2 to assess your knowledge.

Day 5: Revision and Mock Practice

Review your notes and revisit Mindmap: Number Systems for a holistic overview.
Redo important documents such as Important Concepts: Number System - 2 and Introduction: Number System to clarify doubts.
Take the MCQ: Number System - 1, MCQ: Number System - 2, and MCQ: Number System - 3 for comprehensive practice.
Clarify any remaining doubts and consolidate your understanding.

Important Links

FAQs on 5-Days Study Plan: Number System

	Quantitative Aptitude for SSC CGL

1. How do I identify prime and composite numbers quickly for SSC CGL exams?

Ans. Prime numbers have only two divisors (1 and themselves), while composite numbers have more than two divisors. For the number system section, memorise primes up to 100: use divisibility tests to check if a number is divisible by 2, 3, 5, or 7. Numbers like 97 and 89 are prime; 48 and 91 are composite. This distinction is fundamental for solving factor-based problems in quantitative aptitude efficiently.

2. What's the difference between rational and irrational numbers, and why does it matter for SSC CGL?

Ans. Rational numbers can be expressed as fractions (p/q) where p and q are integers; irrational numbers cannot. Examples include √2, π, and e, which have non-repeating, non-terminating decimals. Understanding this classification helps students tackle algebraic expressions, surds, and real number problems. Many CGL questions test whether students can classify decimal expansions correctly.

3. How do I use divisibility rules to solve number system problems faster?

Ans. Divisibility rules are shortcuts for checking if numbers divide evenly without performing full division. For example, a number is divisible by 3 if its digit sum is divisible by 3; divisible by 4 if its last two digits form a number divisible by 4. Mastering rules for 2, 3, 5, 6, 9, and 11 reduces calculation time significantly during the exam and prevents computational errors.

4. What are factors, multiples, HCF, and LCM, and when do I use each one?

Ans. Factors are numbers that divide evenly into another number; multiples are products of a number with integers. HCF (Highest Common Factor) finds the greatest common divisor of two numbers; LCM (Least Common Multiple) finds the smallest common multiple. SSC CGL tests these concepts heavily in word problems involving grouping, distribution, and time-based scenarios where students must identify which tool applies.

5. How can I master even, odd, and special number properties for the number system section?

Ans. Even numbers are divisible by 2; odd numbers leave remainder 1. Key properties: even + even = even; odd + odd = even; even × any number = even. Natural numbers, whole numbers, integers, and real numbers form a hierarchy. Refer to mind maps and flashcards on EduRev to visualise these classifications and relationships, which clarify perfect squares, cubes, and number patterns tested in quantitative reasoning.

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Table of Contents
1. Introduction
2. Chapter Overview
3. Study Plan
4. Important Links

5-Days Study Plan: Number System