A lackluster interviewee

Yesterday, I interviewed an applicant for an IT position. He did not do very well at all. For example, I posed a problem to him that (to cut a long story short) led to him having to divide 1000 by 8. I'd expect any computer science graduate to be able to figure that out in his head, but he couldn't. Very disappointing.

He did poorly in many other ways as well. I don't think he has a chance of being hired.