As far I as I remember, "any" and "some" are used with plural nouns or uncountable ones. I know about exceptions for "some" (Wow, some car).
But can I say the following and be grammatical:
Is there any other problem?
or should be better this:
Is there another problem?
Best Answer
Yes.
are all valid.
By the way, your title would be more idiomatic if you said "Can I use any with [a|any] singularnoun in formal English?"
Any
in this case would connote a broader application ("Any singular noun at all?") thana
("Are there some singular nouns I can use it with?").I concur with @Mari-Lou A that "Is there any other problem?" sounds non-idiomatic. More usual alternatives might be: