No, "it" is a two letter word denoting a previously mentioned subject. (Which you have not).
Whole numbers are the same as integers. Whole numbers are a proper subset of rational numbers.
Whole numbers and integers are the same. They are a proper subset of rational numbers.
The set of integers includes the set of whole numbers. The set of rational numbers includes the sets of whole numbers and integers.
Integers are the same as whole numbers. Integers are a proper subset of rational numbers.
Whole numbers and integers are the same thing. They are a proper subset of rational numbers.
Whole numbers and integers is basically the same. Actually, this depends on the exact definition used for "whole numbers"; the term "integers" is unambiguous, and thus preferable.
Concentric circles. The set of whole numbers is a subset of the set of integers and both of them are subsets of the set of rational numbers.
Concentric circles. The set of whole numbers is a subset of the set of integers and both of them are subsets of the set of rational numbers.
Whole numbers are integers.The ratio of two integers, p and q where q is not zero, is a rational number.
All whole numbers are decimal numbers.
Whole numbers are a proper subset of decimal numbers. All whole numbers are decimal numbers but not all decimal numbers are whole numbers.
The set of rational numbers includes all whole numbers, so SOME rational numbers will also be whole number. But not all rational numbers are whole numbers. So, as a rule, no, rational numbers are not whole numbers.