Explain how to get a square number?

To get a square number, you simply multiply an integer by itself. For example, if you take the number 4 and multiply it by 4 (4 × 4), you get 16, which is a square number. The formula can be expressed as ( n^2 ), where ( n ) is any integer. Common square numbers include 1, 4, 9, 16, and so on.