Types of Numbers
Types of Numbers Understanding the different types of numbers is fundamental in mathematics. Let’s break them down step by step, with explanations and examples. 1. Natural Numbers (N) Definition: Natural numbers are the basic counting numbers. These are the numbers we first learn as children. Set Notation: N = {1, 2, 3, 4, 5, ...} Key Points: They start from 1 and go on infinitely. No fractions or decimals. No negative numbers or zero. Examples: 3, 27, 1000 2. Whole Numbers (W) Definition: Whole numbers are like natural numbers, but they also include zero. Set Notation: W = {0, 1, 2, 3, 4, ...} Key Points: Start from 0. No fractions, decimals, or negatives. Examples: 0, 5, 88 3. Integers (Z) Definition: Integers include all whole numbers and their negatives. Set Notation: Z = {..., -3, -2, -1, 0, 1, 2, 3, ...} Key Points: Includes negative numbers, zero, and positive numbers. No fractions or decimals. Examples: -7, 0, 23 4. Rational Numbers (Q) Definition:...