Real Numbers — Definition & Examples

$$\text{How Can Numbers Be Real If Our }i\text{'s Aren't Real}$$

=== Jaden Smith wrote the most baffling tweet back in 2013.

"How Can Mirrors Be Real If Our Eyes Aren't Real"

While this makes no sense, let's use it to discuss imaginary numbers. Imaginary numbers are a group of numbers that aren't real numbers. They use $i$ to signify that they're imaginary.