Which of the following sets is a proper subset of rational numbers?
Show answer & explanation
Correct answer: D
Explanation
The set of whole numbers is a proper subset of the set of rational numbers.
A proper subset is a set in which all elements are contained within a larger set, but the subset itself is smaller than that larger set.
Rational numbers are numbers that can be expressed in the form p/q (where q ≠ 0).