Question

\[\neg\emptyset\]

Answer 1

Ok, what do you want to put in it?

Answer 2

\[\mathbb U\]?

Answer 3

I don't think that necessarily follows, but it's certainly allowed.

Answer 4

how else could this question be answered ?

Answer 5

\[ {\Omega}\]

Answer 6

It doesn't look like a question to me. It looks like you're saying, "the set is not empty."

If it's not the empty set, then what's in it?

Answer 7

everything?