You approach two talking doors. One door leads to the City of Truth, while the other door leads to the City of Liars. You do not know which door is which. You are able to ask only one question to determine which door is which. The door that leads to the City of Liars always speaks lies, while the door that leads to the City of Truth always speaks the truth. You want to go to the City of Truth. What question do you ask to determine which door leads to the City of Truth?
^first answer and right answer wins
2007-01-24 10:29:53 · 12 answers · asked by sara55423 1 in Entertainment & Music ➔ Jokes & Riddles
If you ask Door A "If I ask the other door which leads to the city of truth, what would that door tell me?" If you are talking to the door of Truth, it will tell you the lie the other door will say, so if that door says "That door will tell you to enter through B" which would be a lie on Door B's part, so you go through Door A. If Door A is a liar, it will respond with "That door will tell you to go through me, Door A" which will be a lie on Door A's part, so you go through Door B.
2007-01-24 10:39:59 · answer #1 · answered by Anonymous · 0⤊ 0⤋
You ask one door, "If I asked the other door if it leads to the City of Truth, what would he say?" If the door you ask answers, "No," then you go through the door that you did not ask. However, if it answers, "Yes," then you go through the door that you asked.
Reasoning:
If you are talking to the Truth door, then he can only answer "Yes" because the other door must lie, meaning that it leads to the City of Liars. This means he must lie about not leading to the City of Truth, so his answer would have to be "Yes" if you were to ask him. The Truth door would tell the truth about what the Liar door would answer.
If you are asking the Liar door, then the other door would be the Truth door. Since the other door would lead to the City of Truth and would truthfully answer your question, its answer would have to be "Yes." However, because you are asking the Liar door, it would lie to you and say that the other door would say "No."
This question would also work if you didn't know that the door that leads to the City of Truth always tells the truth, and that the door that leads to the City of Liars always lies. You would just need to know that one door always lies and one door always tells the truth.
2007-01-24 11:42:35 · answer #2 · answered by Nick R 4 · 0⤊ 0⤋
Which door will the other door tell me leads to the City of Truth?
2007-01-24 10:40:13 · answer #3 · answered by Polly 4 · 0⤊ 0⤋
I think you ask door A if door B would tell you A is the truthful one.
If A is Truthful then A would say No. If A is the Liar A would say Yes.
2007-01-24 10:38:02 · answer #4 · answered by Jamie C 2 · 0⤊ 0⤋
Ask a door
"would the other door call this the door of truth?"
If the answer is "yes".... it is the door of liars
If the answer is "no"... it is the door of truth
2007-01-24 10:40:47 · answer #5 · answered by rosie recipe 7 · 0⤊ 0⤋
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2016-12-16 12:44:20 · answer #6 · answered by penso 4 · 0⤊ 0⤋
Are u a door?
2007-01-24 12:17:46 · answer #7 · answered by Anonymous · 0⤊ 0⤋
i never get a chance to answer these cuz there ar already 25 answers! lol w/e
post bac i wanna no
2007-01-24 11:08:42 · answer #8 · answered by sexy_beast 4 · 0⤊ 0⤋
Any question which YOU can answer truthfully.
For example, "what color is a new fallen snow?" or.."what is the name of my youngest sister?"
2007-01-24 10:38:55 · answer #9 · answered by Barbara A 5 · 1⤊ 0⤋
which door is which
2007-01-24 10:51:42 · answer #10 · answered by austincrume 2 · 0⤊ 0⤋