This question already has an answer here:
Have you ever wanted to view a deleted question even if you don't have the required 10k rep for it?
All you need is the link:
Take for instance a question from the deleted meta questions archive like
Envelope lighting up arbitrarily and unpredictably.
Take the link:
posts and add an
edit to the end
Open that link and you can see the question. That is a bug, right?
I noticed it because I clicked on the edit button of a question that got deleted while I viewed it and I could still open the edit dialog.
PS: I could not get it work for answers though. But maybe someone else has more luck...