What? You mean a set of binary realtions $\displaystyle \mathbb{R} \to \mathbb{R}$ ?

If you dislike the problem then why did you post it??

-Dan

PS Probably the reason the other sites get annoyed with you is for posting so many problems. I understand you are trying to get better at doing word problems but you have posted a number of equivalent problems that you should, by now, be able to handle. In my humble opinion you are at the point where you need to find a source of confidence, not more Math problems.