Question ending with "no?" -- can I use "n da?" instead, among friends?


I know what "no da" and "n da" are for. When I hear the question something
like "nani wo shite iru no?" from a friend, I wonder: can the question "nani
wo shite iru n da?" be used instead? Do they mean exactly the same meaning or
is there **any difference in connotation**?

or

[code]

    doko e iku no? --> doko e iku n da?
    
[/code]

In other words, can "(na) no?" always be replaced with "(na) n da?" **in a
question** when talking to friends? Will this soound a bit more direct and
masculine?




> In other words, can "(na) no?" always be replaced with "(na) n da?" in a
> question when talking to friends? Will this sound a bit more direct and
> masculine?

Yes. Exactly. It sounds a bit more direct and masculine.

If you are a man, you can almost always exchange each other.

On the other hand, if you are a woman, you had better not replace "(na) no?"
with "(na) n da?". It sounds weird.




> In other words, can "(na) no?" always be replaced with "(na) n da?" in a
> question when talking to friends? Will this sound a bit more direct and
> masculine?

Yes. Exactly. It sounds a bit more direct and masculine.

If you are a man, you can almost always exchange each other.

On the other hand, if you are a woman, you had better not replace "(na) no?"
with "(na) n da?". It sounds weird.

