How to answer this question grammatically corectly. Thanks for help
May I open the window? No, you mayn't or No, you may not.
Van you explain ,thanks

Question

How to answer this question grammatically corectly. Thanks for help
May I open the window?     No, you mayn't           or               No, you may not.
Van you explain ,thanks

Answer

I remember when I was a child ... a long time ago... seeing 'mayn't' in an old book. It looked very strange even then.

These days, the contraction 'mayn't' no longer exists. You have to use the full form: may not.

Answer

No, you may not

Answer

"No, you may not." is the correct response.