# What are the set of counting numbers between 20 and 28?

• Last Updated : 01 Sep, 2021

We study numbers from kindergarten in various forms such as counting the number of boys in class, learn to do operations. Numbers are important in maths as well as everyday life, without numbers it’s impossible to do many tasks such as telling the time, telling our age, and many more.

A number is an essential part of maths. It is used to perform different operations to calculate the results based on input or given data and is also used in day-to-day life.

What is a Number system?

It is a representation of numbers using digits or symbols. It is divided into the category such as natural number, whole number, integer, and fraction.

Numbers are classified into many categories

• Natural number (N): These are the basic numbers which we study in early classes. A natural number is simply a positive integer. It is also known as counting numbers, these are always positive and can be counted. Examples of natural numbers are 1,2,3,4,5,6,7,8,9,10……
• Whole number (W): When zero is also included in counting numbers it is known as a whole number. Example of whole numbers are 0,1,2,3,4,56,7,8,9……
• Integer (Z): Any number other than decimal or fraction is known as an integer it can be negative, positive, or zero. Example of integer are -5,-1,0,2,6…..
• Fraction: Numbers other than integer which can be written in the form of x/y are fractions. Examples of fractions are -1/2, 2/3,3/5……(y, cannot be zero)

Steps to find a set of counting numbers:

Step 1: Write the set of counting numbers for lower values.

Step 2: Write the set of counting numbers for the higher values.

Step 3: Eliminate the common parts, excluding the given numbers.

### Question: What are the set of counting numbers between 20 and 28?

Step 1: Write the set of counting numbers for 20.

{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}.

Step 2: Write the set of counting numbers for the 28.

{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28}.

Step 3: Eliminate the common parts, excluding the given numbers.

{20,21,22,23,24,25,26,27,28}.

The set of counting between 20 and 28 are {20,21,22,23,24,25,26,27,28}.

Hence, the set of counting between 20 and 28 are {20,21,22,23,24,25,26,27,28}.

### Similar Questions

Question 1) What is the set of counting numbers between 5 and 10?

Step 1: Write the set of counting numbers for 5.

{1,2,3,4,5}

Step 2: Write the set of counting numbers for the 10.

{1,2,3,4,5,6,7,8,9,10}

Step 3: Eliminate the common parts, excluding the given numbers.

{5,6,7,8,9,10}

The set of counting between 5 and 10 are {5,6,7,8,9,10}.

Hence, the set of counting between 5 and 10 are {5,6,7,8,9,10}.

Question 2: What is the set of counting numbers between 5 and 10?

Step 1: Write the set of counting numbers for 5.

{1,2,3,4,5}.

Step 2: Write the set of counting numbers for the 15.

{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}.

Step 3: Eliminate the common parts, excluding the given numbers.

{5,6,7,8,9,10,11,12,13,14,15}.

The set of counting between 5 and 10 are {5,6,7,8,9,10,11,12,13,14,15}.

Hence, the set of counting between 5 and 10 are {5,6,7,8,9,10,11,12,13,14,15}.

My Personal Notes arrow_drop_up