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Introduction to Number System - 2 Video Lecture | Crash Course for SSC CGL (English)

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FAQs on Introduction to Number System - 2 Video Lecture - Crash Course for SSC CGL (English)

1. What is the number system?
Ans. The number system is a mathematical system used to represent numbers. It includes different types of numbers such as natural numbers, whole numbers, integers, rational numbers, and irrational numbers.
2. What are natural numbers?
Ans. Natural numbers are a set of positive integers starting from 1 and extending to infinity. They do not include zero or negative numbers.
3. What are rational numbers?
Ans. Rational numbers are numbers that can be expressed as a fraction, where the numerator and denominator are integers. They can be positive, negative, or zero.
4. What are irrational numbers?
Ans. Irrational numbers are numbers that cannot be expressed as a fraction, and their decimal representation goes on indefinitely without repeating. Examples of irrational numbers include √2 and π.
5. What is the difference between whole numbers and integers?
Ans. Whole numbers are a set of non-negative integers including zero. Integers, on the other hand, include both positive and negative numbers, including zero. In simple terms, integers are the combination of whole numbers and their negatives.

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