you are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.

There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.

You can, however, ask one robot one question. The problem is one robot always tells the truth ,the other always lies and you don't know which is which.

What is the question you ask?

Question

you are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.

There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.

You can, however, ask one robot one question. The problem is one robot always tells the truth ,the other always lies and you don't know which is which.

What is the question you ask?

lgbasallote · Answer

where is death door

anonymous · Answer

But you don't know which robot is the liar and which is telling the truth?

anonymous · Answer

Hint: The two robots know each others personality. That they talk when they're bored, lonely, etc. Try to get the two robots to cancel their evil & good ways out.

lgbasallote · Answer

liar robot points to freedom door

truth robot points to death door

anonymous · Answer

But you can ask only one and you don't know which is which

lgbasallote · Answer

lol then ask one of them

anonymous · Answer

your friend said you are a lying robot, is it true?

lgbasallote · Answer

lol you said "you can ask one robot one question" got me confused

inkyvoyd · Answer

Ask one the contradictory statement

inkyvoyd · Answer

Ask the other where the door is.

anonymous · Answer

Still, if you ask the liar robot he'll say he isn't and lie while the one that tells the truth will say the same...so that doesn't help..
Give up?

lgbasallote · Answer

Where will the truth robot point as the freedom door?

lgbasallote · Answer

that's the question

inkyvoyd · Answer

You can say, for the first
A. Are you both liars?
B. WHere is the door

anonymous · Answer

want the answer?

anonymous · Answer

I'll wait

inkyvoyd · Answer

Thus for case a, if the answer is yes
then, for case b, follow the answer.
if for case a, the answer is no,
then for case b, follow the opposite of the answer.

anonymous · Answer

lol

anonymous · Answer

Couldnt you just ask something you know the answer to? like " Is 2 + 2 equal to 4?"  The truth robot will say yes and the liar robot will say no.

parthkohli · Answer

We'll ask ---> If I ask the other robot about where is the death door, what will it say?

inkyvoyd · Answer

@joemath314159 , that works too

lgbasallote · Answer

then you cant ask where the death/freedom door is

anonymous · Answer

you can only ask ONE question so you'd end up knowing 2 + 2 and which robot is which but ur stuck in the death chamber lol

anonymous · Answer

Good question.

inkyvoyd · Answer

No.

anonymous · Answer

lol

inkyvoyd · Answer

You only have to ask 2+2 once

lgbasallote · Answer

that works @ParthKohli

anonymous · Answer

Answer please.

anonymous · Answer

now do u want the answer?

inkyvoyd · Answer

you only need one true or false statement to determine theother

parthkohli · Answer

@jazy If the robot says that the other robot will say --> The right one is the death door, then the death door will be the left one.

lgbasallote · Answer

parth got it

parthkohli · Answer

See my answer.

anonymous · Answer

Ask one robot what the other robot would say, if it was asked which door was safe. Then go through the other door.

parthkohli · Answer

That's what I answered lol

anonymous · Answer

Nice job @ParthKohli :D

lgbasallote · Answer

that's what ive been telling you dude =_-=

parthkohli · Answer

BTw I heard this riddle from my uncle :D

inkyvoyd · Answer

@jazy , you should've said that you can only ask one question

inkyvoyd · Answer

2 times 1 is 2, which makes two questions

inkyvoyd · Answer

Also, you don't actually know that the robots know which door is which

anonymous · Answer

@inkyvoyd the question does say it:)

inkyvoyd · Answer

Since those two premises were not given, it is impossible to understand what you want

inkyvoyd · Answer

"You can, however, ask one robot one question. "

lgbasallote · Answer

@jazy i said something like it "Where will the liar point as the death door"

parthkohli · Answer

WTH the asker got two medals :O:

inkyvoyd · Answer

yea, I'm outta here.

anonymous · Answer

seriously...oh dear, giving too much thought to a riddle:/

anonymous · Answer

so did u @ParthKohli

inkyvoyd · Answer

No, I'm being nit-picky, because the riddle was not phrased correctly.

lgbasallote · Answer

now he has 3

parthkohli · Answer

Trolololo ^

anonymous · Answer

3 and counting.. lol

anonymous · Answer

sorry @inkyvoyd but thats exactly how my friend sent it to me...Riddles are all about word play anyway if u think about it

lgbasallote · Answer

@jazy if you ask "where will the iar point as death door" both will point to freedom door :P

lgbasallote · Answer

there are countless solutions to this

inkyvoyd · Answer

@jazy , that is exactly what I mean. If you don't know whether the robots actually know where the door is, asking them this is pointless

parthkohli · Answer

I was drinking water you guys made me spit it out >.<

anonymous · Answer

No the liar would point away from the freedom door because he'd be lying...there are a lot of solutions...

inkyvoyd · Answer

Since riddles are about wordplay and logic, you can't actually do a problem without all of the info

anonymous · Answer

@ParthKohli LOL:P

lgbasallote · Answer

i ask the liar where is the death door..then he'll point the freedom door duh :p

inkyvoyd · Answer

If you don't have all of the info, and have to infer things, but can infer the wrnog things, the riddle is badly written, and should get - out.

inkyvoyd · Answer

Trololl

parthkohli · Answer

How'll we even know who's the liar? @lgbasallote o.O

inkyvoyd · Answer

how bout this-
Are both of you liars, and which one is the death door?

inkyvoyd · Answer

One question. Two answers

parthkohli · Answer

Lol inky....

anonymous · Answer

@lgbasallote what @ParthKohli said and @inkyvoyd I already apologized for my mistake.

lgbasallote · Answer

lemme write this...i ask where will the liar point as death door

truth -> points to freedom door because liar's logic will point to freedom door

liar -> he'll lie so he'll point to freedom door

*facepalm*

inkyvoyd · Answer

@jazy , I"m a troll, trolls don't eat apologies, they eat rage

parthkohli · Answer

@lgbasallote you're late now lol

parthkohli · Answer

@inkyvoyd trolls eat victims xD

inkyvoyd · Answer

Are both of you liars, and which one is the death door?
->best. answer. Ever.

lgbasallote · Answer

parth kohl's was a rephrased version of what i  said lol

anonymous · Answer

good for u then:) ur doin a great job:D

lgbasallote · Answer

harrassing askers is fun aint it @inkyvoyd ;D

anonymous · Answer

I'm confused with all the posts so i cant see what u wrote @lgbasallote

inkyvoyd · Answer

Hey, a function can have two arguments

parthkohli · Answer

http://www.youtube.com/watch?v=2Z4m4lnjxkY

anonymous · Answer

It seems like fun to me:P I'd love to do it if i had more free time lol:D
**evil laugh**

lgbasallote · Answer

squaare roots have plus and minus

anonymous · Answer

wth

anonymous · Answer

This lifted my teamwork yay!

parthkohli · Answer

$\sqrt{9} = \pm3$

Agreement with lgba

inkyvoyd · Answer

@ParthKohli

inkyvoyd · Answer

completely wrong.

inkyvoyd · Answer

$\Huge \pm\sqrt{9}=\pm 3$

parthkohli · Answer

@inkyvoyd No!!

inkyvoyd · Answer

$\Huge \sqrt{}$ denotes the principle square root, not the plus minus square root.

apoorvk · Answer

You ask the robot (any one) - Are you lying that this is the death door?

inkyvoyd · Answer

@apoorvk , too late

parthkohli · Answer

Both will say no @apoorvk

anonymous · Answer

@apoorvk ^^and either way one will lie about it