Is it possible for a number to be a rational number that is not an integer but is a whole number

So it is rational. Every whole number n n can be written as a fraction of integers: n=n1 n = n 1 . We aren't required to write it that way; we just need to know that it ispossible to express every whole number as a fraction of integers, and hence it isrational.

No, integer and whole number mean the same thing. For something to equal itself is impossible.