Basics of Mathematics

Simple define of number

                                         A number is a mathematical  tool which is used to measure,label and count.

Types of numbers

                              There are many types of numbers which are given below.

• Whole numbers

• Natural numbers 

• Even numbers

• Odd numbers

• Prime numbers 

• Composite numbers

• Rational numbers

• Irrational numbers

• Real numbers 

• Complex numbers

• Integers

Whole numbers

                         Whole numbers are those positive numbers which are started from zero.they are only positive numbers .the set of these numbers are represented by W.

Natural numbers

                           Natural numbers are those numbers which are started from 1. and these are only positive numbers .the set of those numbers are represented by N.

Even numbers 

                      Even numbers are those numbers which can be completely divided by 2.the set of these numbers are represented by E.

Odd numbers 

                    Odd numbers are those numbers which cannot by properly divided by 2 .the set of those numbers are represented by O.

Prime  numbers

                         Prime numbers are those numbers which have only 2 factors.one is itself and anther is 1.the set of these numbers are represented by P.

composite numbers 

                              Composite numbers are those numbers which have more then 2 factors .the set of these numbers are represented by C.

Integers 

            Those  positive and negative  numbers which are started from zero .these are both positive and negative numbers.the set of these numbers are represented by Z.

Rational numbers

                           Those numbers which can be written in the form of p/q .where as p,q belongs to the set of integers and q not equal to zero.the set of these numbers are represented by Q.

Irrational numbers

                             Irrational numbers are those numbers which cannot be written in the form of p/q .where p,q not belongs to the set of integers.the set of these numbers are represented by Q'.

Real numbers

                      Real numbers are those numbers which have both the qualities of rational and irrational numbers.the set if those numbers are represented by R.

Complex numbers

                             The numbers which is the combination of real number and the imaginary unit is known as complex numbers .

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