Not a native English speaker here, but if you could allow me to answer the question, I assume that the second one is as grammatically correct as 'I don't mind you asking me questions' because 'asking' can be reckoned as a gerund, noun, if it is preceded by 'your', while 'asking' which follows 'you' is meant to be present participle functioning as an adverb. Please refer to: http://www.quickanddirtytips.com/education/grammar/should-it-be-you-or-your-gerunds Anyone please correct me if I am wrong. Cheers

Hi, The second one is not grammatically correct, you are confusing "your"and "you". Remember "you" is the pronoun and "your" is for possession. It should be: "I don't mind you asking me questions." The other 2 are OK.

These ones all look pretty good. The first one is perfectly fine, but it's very formal. If you're going for something a little less formal you might say "papers" instead of documents. The second one is perfectly fine, but I think you'd hear "I don't mind you asking me questions" more often. I can't speak to the grammatical accuracy, but that's what people usually say. The last one is perfect, that's exactly what everyone says.