Can numbers fit into more than one category, i.e., whole, integers, rational, irrational, and real??

Question

Can numbers fit into more than one category, i.e., whole, integers, rational, irrational, and real??

Answer 1

Yeah, definitely.

Answer 2

Yes. All integers are whole numbers, for example. So four (4) fits into both of these categories.

Answer 3

Whole numbers are integers, rational and real.

Integers may or may not be whole numbers but are always raional and real.

Rational numbers may or may not be whole numbers or integers, but are always real.

Irrational numbers are never whole, integers or rational, but are always real.

Real numbers may be rational or irrational but never both. If they are rational numbers they may or may not be whole or integers.