# Positive Number

## Positive Number

Real number that is greater than or equal to zero.

The only number that is both positive and negative is the number 0.
In general, the sign of a positive integer is implied and we do not write it.
The opposite of a positive number is a negative number with the same absolute value and vice versa.

• The opposite of –5 is 5.
• The opposite of 7 is –7.

### Examples

The numbers 5, 7, $$\frac{1}{2}$$, $$\sqrt{6}$$, 2.8 and 13π are positive numbers.