"Har du nogle bøger om hans teorier?"

Translation: Do you have any books about his theories?

[LucBE]

The tts clearly isn't a proponent of his theories. She sounds meget disapproving.

[MetalheadScott]

The app "nogle" as any OR some. "Some books" was counted wrong

[Peter688967]

Can you write nogen bøger?

[arielkangaroo]

Nope, "nogen" is only used with singular common gender nouns.

[Peter688967]

Actually I have found out that "nogen" is correct in this sentence, as it is a question.
http://sproget.dk/raad-og-regler/typiske-problemer/nogen-eller-nogle/nogen-eller-nogle
"har du nogen æbler til mig".

[NilsVittru]

As a native danish speaker, I would actually not say it like that. It might just be dialect and such, but to me it sounds wrong.
¨
However if you were to say something like "Are there anyone here who can read?" you could use both 'nogle' and 'nogen' ("Er der nogle/nogen her, der kan læse?")

[Peter688967]

I don't know if it's a special dialect or not, but they sing it that way!
http://sangetilboern.dk/aeblemand/

[Richard446785]

It sounds like nogen at both speeds