any rule or any rules

[Tukanja]

How this should be said

Do you know any general rule on when to use..
Do you know any general rules on when to use..

Thanks

[maazrah]

Hi,

With "any" you can possibly receive multiple answers, so you should use "rules".

You can also say,

"Do you know a general rule on when to use..."

Hope that helps,
Maaz
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