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

1 Answer
Jul 13, 2015

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


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.