"No problem" or "no problems"? [closed]

I study English and I ran into a problem. What version is correct:
"no problem" or "no problems"?

P.S. Is "ran into a problem" correct?
P.P.S. Is version correct word for this situation? May be "variant"?


Solution 1:

It depends.

If the following case

Can you finish on time? Yes. No problem.

you use the singular form.

On the contrary, in a phrase like:

I carefully examined your solution, and found no problems in it.

you can also use the plural form, indicating that you examined more than one possible problems in the suggested solution.