Riddle help

[barnet boy]

I remember parts of a riddle from a few years ago and wonder if anyone can help fill in the blanks.
It goes something like this.

A trapped man has 3 doors in front of him. Two doors will lead to certain death and one will lead to freedom.
Each door is guarded by a person and the man is allowed to ask each guard one question only.
However, two of the guards will always lie when asked a question and one guard will always tell the truth. The man does not know which guard is which.
What three questions can he ask to ascertain which is the correct door?

[saintpeter48]

i would ask each guard whether they were telling the truth, that way the two who told a lie will in fact be telling the truth, I think!!!! my brain hurts, LOL.

[starry eyes]

yeah thats right, iv heard that before, and im sure thats the right answer

[sliz49]

surely that doesn't work? The lying two would say yes, but so does the truthful one

[dancecaller]

You say "if I asked you if it is safe to go out of this door, would you say yes".

If you ask "is it safe" and it is the truthteller would say "yes " and the liar "no", but the liar would lie about this and answer the above question "yes".

I remember this from about 40 years ago and I thought the first version was 2 doors and only allowed 1 question. This is all you need, if you get the answer "yes" go through that door, if "no" go through the other door.

Then came the 3 door problem. With the question I've suggested you might need to ask 2 of them.
I'm trying to remember if you can find the right door with only 1 question.

[dancecaller]

Maybe you were allowed 2 questions but only to the same guard. Then you could ask "If I asked you...", and if you got the answer "No" then ask the same about another door.
I have a nasty suspicion you were supposed to do it with 1 question though.

[dancecaller]

Or maybe there were 3 doors but only 2 guards, the liar and the truthteller.
You want a three layer question.