Question

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

Answer 1

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 `....` behind the number (to show that more is coming), it is a rational number. It can be expressed as:

`-(396213/100000)` 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.