How many whole numbers are less than n?

Question

The answer must not be n-1

Answer 1

There are an infinite number of integers less than n

but whole numbers include only non-negative intergers

which are: 0, 1, 2, 3, ... n-1, n

the number of whole numbers less than n is n, if n is non-negative

if n is negative or 0, then there are zero whole numbers less than n

had the question been about "natural numbers" then n-1 would have been correct

assuming n is non-negative. "natural numbers" do not include zero.