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Algebra, Geometry, Calculus and Statistics & Probability are considered to be the 4 main branches of Mathematics.

Lesson Summary Natural NumbersAlso known as the counting numbers, they include 1,2,3,4,5,6...IntegersAll whole numbers, including negative numbersRational NumbersAll integers, including fractionsIrrational NumbersNumbers that cannot be expressed as fractions, for example, piReal NumbersAll numbers1 more row • 30-Oct-2021

Natural Numbers (N), (also called positive integers, counting numbers, or natural numbers); They are the numbers {1, 2, 3, 4, 5, …}

Integers - Whole Numbers with their opposites (negative numbers) adjoined. Rational Numbers - All numbers which can be written as fractions. Irrational Numbers - All numbers which cannot be written as fractions. Real Numbers - The set of Rational Numbers with the set of Irrational Numbers adjoined.

There are four categories in which numbers can be claified in. These categories include rational numbers, irrational numbers, integers, and whole numbers.

Types of Numbers Natural Numbers. Whole Numbers. Integers. Rational Numbers. Irrational Numbers. Real numbers. Complex numbers.

Hence, 0.318564318564318564... is a rational number.

They are natural and whole numbers, odd and even numbers, rational and irrational numbers, etc. We will discuss all the types here in this article. Apart from these, the numbers are used in various applications such as forming number series, maths tables, etc.