Counting Numbers

 Counting is understanding how many things there are in a group. 

A counting number is any number in the list { 1, 2, 3, 4, … }.

Used for counting 1, 2, 3…. or ordering 1st, 2nd, 3rd…

Counting numbers are more often called the natural numbers. The symbol N represents the set of natural numbers.
N{ 1, 2, 3, 4, … }