The numbers which are used for counting from one to infinity are called Counting Numbers.

More About Counting Numbers

Counting numbers are also called as natural numbers.

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Example of Counting Numbers

There are 7 apples in the basket shown above.

Solved Example on Counting Numbers

Ques: Which of the following is not a counting number?

Choices:

A. 30
B. 9
C. 0
D. 10
Correct Answer: C

Solution:

Step 1: The numbers which are used for counting from one to infinity are called counting numbers.
Step 2: 30, 9, and 10 are counting numbers.
Step 3: So, 0 is not a counting number.