Why we need to whole number, natural number, rational number, integer number and complex number?
Whole numbers are essential for counting and quantitative measurements. They are used to represent positive numbers that do not have any fractional or decimal parts.
Natural numbers are also used for counting and quantitative measurements. They represent positive integers that are used in mathematics, science, and daily life.
Rational numbers are necessary for performing mathematical operations involving fractions, decimals, and percentages. They represent numbers that can be expressed as the ratio of two integers.
Integer numbers are important for describing negative numbers, zero, and positive numbers without any decimal or fractional parts. They are used in real-life situations such as temperature readings (positive and negative) and bank account balances (negative and positive).
Complex numbers are required for solving equations that involve the square root of negative numbers or imaginary numbers. These numbers are used in various fields such as physics, engineering, and computer science.