When people use "minimum" or "maximum" and then follow that with a range.
I once applied for a job where one of the requirements was "minimum 5 to 10 years experience in X". My friend told me to submit a CV saying I have 3 to 6 years experience in X and see if they shortlist me.
But - I wouldn't be surprised actually. What I am surprised with is what kind of applicants I get even with requirements like that (although more precise) in the job ad.