# Is  - 3.96213 real number, rational number, whole number, Integer, Irrational number?

Jul 13, 2015

First thing we see, it's NOT a whole number or an integer.

#### Explanation:

It's a real number, because it doesn't have any square roots of negative numbers.

Since there is no $\ldots .$ behind the number (to show that more is coming), it is a rational number. It can be expressed as:

$- \left(\frac{396213}{100000}\right)$ which is a ratio.

Rational numbers are a sub-set of the real numbers, so if you are allowed one answer, you should choose for rational.