Is #5# a rational, irrational, natural, whole, integer or real number?

1 Answer
Jul 10, 2015

It can be assigned to all above groups except irrational numbers.


  1. If a number consists only of digits, it is a natural number.
  2. An integer is a natural number or a number with minus sign and digits only.
  3. If it can be represented as a fraction, it is rational,
  4. If it cannot be represented as a fraction it is irrational.

The sets mentioned in points 2 and 3 include the ones mentioned above (#NN sub ZZ sub QQ#)

Rational and irrational numbers form real numbers set.

#5# consists of digits only so it is natural, but as mentioned above it is also integer, rational and real.