Reviewing for exams today... yay...

Anyways, I need some help on this question.

Name the subset(s) of the real numbers to which the number belongs: -7

There's no multiple choice answers by the way.

2 answers

Well, the only number set that -7 does NOT belong to is the
set of natural numbers, and the set of whole numbers.

What other sets have you studied?
Oooh.. Okay, I just now got it..
I had a major brain fart there for a second.
I get a little nervous around semester exams.