Various Types of Numbers


In various types of numbers we will learn about even numbers, odd numbers, prime numbers, composite numbers, co-prime numbers and twin prime numbers along with the example:


Even Numbers

A whole number exactly divisible by 2 is called even numbers.

For example:

2, 4, 6, 8, 10, 12, 14, 16..........................are even number. Or a number having 0, 2, 4, 6, 8 at its units place is called an even number.


246, 1894, 5468, 100 are even number.

Any two even numbers which differ from one another by 2 are called consecutive even number.



Odd Numbers

A whole number which is not exactly divisible by 2 is called an odd number.

For example:

3, 5, 7, 9, 11, 13, 15, are odd number.

Or a number having 1, 3, 5, 7 and 9 at its units place is called an odd number.



Prime Numbers

Number s which have only two factors namely 1 and the number itself are called prime numbers.

For example:

2, 3, 5, 7, 11, 19, 37 etc are prime numbers.



Composite Numbers

Numbers having more than two factors are called as composite numbers.

For example:

4, 6, 8, 10 etc are composite numbers.

Notes:

(a) 1 is neither prime nor composite.

(b) 2 is the lowest and the only even prime number.

(c) 9 is the lowest odd composite number.



Co-prime Numbers

Two numbers are said to be co-prime if they do not have a common factor other than 1 or two numbers whose HCF is 1 called co-prime numbers.



Co-prime numbers needs not be prime numbers.

For example:

(i) 7 and 10 are co-prime.

(ii) 15 and 17 are co-prime.


Twin Prime Numbers

Twin prime numbers are the two prime numbers whose difference is 2.

For example:

(i) 3 and 5

(ii) 17 and 19

(iii) 41 and 43

(iv) 29 and 31

(v) 71 and 73.







5th Grade Math Problems

From Various Types of Numbers to HOME PAGE




Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.



New! Comments

Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.




Share this page: What’s this?

Recent Articles

  1. 5th Grade Circle Worksheet | Free Worksheet with Answer |Practice Math

    Jul 11, 25 02:14 PM

    Radii of the circRadii, Chords, Diameters, Semi-circles
    In 5th Grade Circle Worksheet you will get different types of questions on parts of a circle, relation between radius and diameter, interior of a circle, exterior of a circle and construction of circl…

    Read More

  2. Construction of a Circle | Working Rules | Step-by-step Explanation |

    Jul 09, 25 01:29 AM

    Parts of a Circle
    Construction of a Circle when the length of its Radius is given. Working Rules | Step I: Open the compass such that its pointer be put on initial point (i.e. O) of ruler / scale and the pencil-end be…

    Read More

  3. Combination of Addition and Subtraction | Mixed Addition & Subtraction

    Jul 08, 25 02:32 PM

    Add and Sub
    We will discuss here about the combination of addition and subtraction. The rules which can be used to solve the sums involving addition (+) and subtraction (-) together are: I: First add

    Read More

  4. Addition & Subtraction Together |Combination of addition & subtraction

    Jul 08, 25 02:23 PM

    Addition and Subtraction Together Problem
    We will solve the different types of problems involving addition and subtraction together. To show the problem involving both addition and subtraction, we first group all the numbers with ‘+’ and…

    Read More

  5. 5th Grade Circle | Radius, Interior and Exterior of a Circle|Worksheet

    Jul 08, 25 09:55 AM

    Semi-circular Region
    A circle is the set of all those point in a plane whose distance from a fixed point remains constant. The fixed point is called the centre of the circle and the constant distance is known

    Read More