Types of Numbers

Number is the basic and very important object of mathematics. Today we are going to discuss about the numbers and their various types. Whenever we apply any mathematical operation then we need to take one or more numbers as an input and that produces an output which is also a number. We can apply many operations on numbers such as multiplication, division, subtraction, addition etc. Numeral is the notation which represents the numbers. (To get help on cbse boards click here)

Now I am going to tell you about the various types of the numbers.
NUMBER TYPES:
1.       Natural Number: These numbers are represented by “N”. Also known as counting numbers. These numbers start from one like: 1, 2, 3, 4, …..
2.       Integers: These numbers are represented as “Z”. These are of two types:

 a) Positive integers

                                                                         b) Negative integers
These are ………-4, -3, -2, -1, 0, 1, 2, 3, 4……………
3.       Rational Numbers: A rational number is represented by a fraction which is consisting of an integer numerator and denominator which is not equal to zero. These numbers are represented by Q. x/y where x is an integer and y is not equal to 0.
4.       Real Numbers: These numbers are all measuring numbers and written with decimal numerals. To represent them we use “R” notation. Example: 2.5342, 5.32 etc.
5.       Complex Numbers: A complex number consists of a number of the form x+iy where x, y are real numbers and i represents the imaginary part of the number and square root of -1. Represented as “C”.

Each number system is a proper subset of the other number set such as: C is the subset of R, R is subset of Q, Q is subset of Z and Z is subset of N (which in turn is Superset of Z).

Here I explained about the Numbers and types of numbers, in next session we will discuss about the various properties of the numbers and In the next session we will discuss about Math Blog on Estimating Quotients.