TYPES of NUMBERS in MATHS
There are different types of numbers which we learn in mathematics. They are-
Natural Number
Whole Number
Whole Number
Integer
Even Number
Odd Number
Prime Number
Co-prime Number
Composite Number
Rational Number
Irrational Number
Real Number
Imaginary Number
Even Number
Odd Number
Prime Number
Co-prime Number
Composite Number
Rational Number
Irrational Number
Real Number
Imaginary Number
Complex Number
Now, we will discuss these numbers with their definition & examples.
1. Natural number
A natural number is a counting number which we use in our day to day life. All-natural numbers are positive. It is starting from 1(one).
The symbol of natural number is N.
Example:- 1,2,3,4,5..........upto infinity.
For Detailed explanation.
2. Whole Number
The whole number is also used as counting. Whole numbers are the group of 0(zero) & natural numbers.
The symbol of the whole number is W.
Example:- 0,1,2,3,4,5.......upto infinity.
For Detailed explanation.
3. Integer
Integers are 0(zero), all positive numbers & negative numbers without any fractional & decimal form.
The symbol of an integer is Z.
Example:- 0,-23,60,192,-278,.....etc.
For Detailed explanation.
4. Even Number
Even numbers are all integers which are completely divisible by 2.
Example:- 2,4,6,8,10,.........upto infinity.
5. Odd number
Odd numbers are all integers which are not completely divisible by 2.
Example:- 1,3,5,7,9,.......upto infinity.
6. Prime number
Prime numbers are those numbers which are not divisible by any number other than 1(one) & itself.
They have only two factors 1(one) & itself.
Remember 1(one) is not a prime number.
Example:- 2,3,5,7,11......so on.
For Detailed explanation.
7. Co-prime number
Co-prime numbers are those two numbers which have a common factor 1(one) only.
Example:- (3 & 8) both have a common factor 1.
8. Composite number
Composite numbers are those numbers which have more than two factors.
Example:- 15, 40, 21,...etc. all numbers have more than two factors.
For Detailed explanation.
9. Rational number
Rational numbers are all those numbers which are in fractional form. It looks like p/q where q≠0.
The symbol of a rational number is Q.
Example:- (3/1), (5/2), ...etc.
For Detailed explanation.
10. Irrational number
Irrational numbers are not in the form of a fraction. Means it is not expressed in the form of p/q.
The symbol of an irrational number is P.
Example:- Ï€, √5, √3, etc.
For Detailed explanation.
11. Real number
Real numbers are all those numbers which are present in positive, negative, fractional, decimals form.
Or it is a combined form of rational & irrational number.
The symbol of a real number is R.
Example:- 12.36, (3/5), 1456, -452, π, ...etc.
12. Imaginary number
An imaginary number is a combined form of the imaginary unit (i)& real number like (bi).
Where b is a real number & (i) is an imaginary unit.
The symbol of an imaginary number is I.
Example:- 4i, 7i, 100i, .....etc.
13. Complex number
A complex number is a combined form of real number & imaginary unit (i) & it is present in the form of (a+bi).
Where a & b stands for real number & (i) stands for imaginary unit.
The symbol of a complex number is C.
Example:- 2+5i, 3+7i, .....etc.