# Odd Number Definition

In **Mathematics**, numbers are **divided** into different sets or **categories**. One of those categories is** Odd Numbers**, which represents numbers not** divisible by 2**. It **means** you will get a decimal or fraction when **dividing** such numbers by** 2**.

**For Example,**

1, 3, 5, 7, 9, 11, etc.

These **numbers** can also be **defined** in another way. **Odd Numbers** are those numbers that** can’t be divided equally into two parts** as we can do with **Even Numbers**. These numbers are also called **opposite** to each other because of their opposite **properties**.

**Table of Contents**

**Note:**

You can read about **Even Numbers** here.

**Odd Numbers** come on the number **line** in a proper sequence with **one even number** between **two odd numbers.**

## Types of Odd Numbers

Like other **categories** of **numbers**, it also has **two** main types. You can **understand** them easily with the following **definition** of those categories

**Consecutive Odd Numbers:**Those**odd numbers**that come in their respective**order**. For example,**3**and**5**are consecutive**odd numbers**because of their**sequence**on the number line.**Composite Odd Numbers:**Those**odd numbers**that are not listed among**prime numbers**. It means that the numbers that are not**prime**and**odd**at the same time. For example,**9**is a**composite**odd number because it is not a**prime number**.

**Note:**

You can read about Prime Numbers here.

### How to Identify Odd Numbers?

The **simplest** way to check whether the given **number** is odd or **not **is by **dividing**. But let us show you a few tricks to identify whether a number is **odd **or **even**.

- If the given number is
**not divisible by 2**, it shows that the number is odd. - If the given number ends with
**1, 3, 5, 7, and 9,**it means that the**number is odd** - If the given number is a
**prime number**(except 2), it means that the**number is odd.** **Division of Integers**

These tricks enable you to know quickly whether the number is odd or not without actually dividing that number.

### Odd Numbers Less Than 50

1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49.

### Fun Facts of Odd Numbers

- The
**addition**of two**odd numbers**is always an even**number**. - The
**subtraction**of**two odd numbers**is always an**even number**. **Multiplication**of**two odd numbers**always gives an**odd number**.- The
**division**of two**odd numbers**shows an**odd number**as the resultant. - The
**smallest**positive**odd number**is**1**. - A
**prime number**will always be an**odd number**(except 2) but an**odd number**will not always be a**prime number**.

### FAQ's

**What is the smallest odd number?**

The smallest odd number is 1.

**Can a prime number be an odd number?**

Yes, a prime number will always be an odd number (except 2).

**Is it possible to divide an odd number by 2?**

Yes, you can divide an odd number by 2 but it will never give a whole number as the result. It will either leave a remainder or give you a decimal answer.

**What is the opposite of odd numbers?**

The opposite term of odd numbers is even numbers. These are the numbers that can be divided by 2 without leaving a remainder.