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Question :
There were 2 doors. one lead to heaven and other to hell there were two doorkeepers one outside each door. one told lie and other spoke truth. what will be one question that czn be asked to both of them so that one comes to know that which door leads to heaven?


Posted by: sonal maharana on 7/1/2013

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Category Logical & Aptitude Interview Questions
Rating (3.8) By 77 users
Added on 7/1/2013
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Answers:

We should ask one of them

"What should other man tell if i ask which is the door to heaven?"

Go through the door which he hasn't said

Explanation:
Let two door be A and B
Assume A is the door to heven
Case 1:
Question asked to the lier
The other man always tell the truth so he pick A.But the lier will say B
Case 2:
Question asked to the man who tells truth
The lier will pick B.And the true man tell the truth.

So both will pick B.So go through A the other door

"Question not upto the standard put some complicated one"



Posted by: shabeer Bin Muhammed sheik

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We should ask one of them

"What should other man tell if i ask which is the door to heaven?"

Go through the door which he hasn't said

Explanation:
Let two door be A and B
Assume A is the door to heven
Case 1:
Question asked to the lier
The other man always tell the truth so he pick A.But the lier will say B
Case 2:
Question asked to the man who tells truth
The lier will pick B.And the true man tell the truth.

So both will pick B.So go through A the other door

"Question not upto the standard put some complicated one"



Posted by: RAMYA

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The question should be "Lie about the door to heaven". The answer from both the liar and the truth speaking person would point to the door of the hell, irrespective of against which gate they are positioned".



Posted by: Vibhu Rawat

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The question which can be asked to both is
" is the other person saying true if he says this door is to heaven "
let door1-heaven
door2-hell
question to person who says truth always-is the other person saying the truth if he says heaven is door 1 .then his answer will be obvisuly "no" bcoz he says truth and the other person "s answer if asked is that door1 is heaven" his answer will be "yes" .and similarly the same question to person who says false then hi answer will be "no"
because he always lies
the actually answer when asked to truth person will be "yes"
hence
it is door1 -heaven
if both of them say no to this question asked
just test u will get it



Posted by: praveen

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The question which can be asked to both is
" is the other person saying true if he says this door is to heaven "
let door1-heaven
door2-hell
question to person who says truth always-is the other person saying the truth if he says heaven is door 1 .then his answer will be obvisuly "no" bcoz he says truth and the other person "s answer if asked is that door1 is heaven" his answer will be "yes" .and similarly the same question to person who says false then hi answer will be "no"
because he always lies
the actually answer when asked to truth person will be "yes"
hence
it is door1 -heaven
if both of them say no to this question asked
just test u will get it



Posted by: kathiresh.k

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what i ask for any one of them is
ques) whether u come with till heaven's door?

then obviously the lier dont answer is " i don't come".
but the other person definetly say " i'll come with u"
thats enough to know how is the lier and what is the door to heaven.



Posted by: sita rama murthy

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We can ask a question to both of them n that question would be "Can you please tell me which is the door to HEAVEN?"

If this question is asked to any body i.e, either to truth speaker or liar both will point the same door.



Posted by: ajay pandey

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Whether he is laier or truth speaker one can ask him "which door goes toward hell and give your answer in his manner"



Posted by: suraj

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you can ask one of them
"if i ask a question,that where does the other door leads, what will be your's and his answer".
now if he is telling the truth,then the two answer given by him would be different(ie heaven,hell or hell,heaven)and if he is lying then his answer would same(ie hell,hell or heaven,heaven)



Posted by: sam

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Questions is "what kind of doors are these?" will make true one to say true about the doors and layer will lye about the door so we come to know about the door.



Posted by: vijay

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will the other guard say that r u standing in front of the right door??



Posted by: santhosh

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Just ask him...

"Are you a door keeper"

If he says yes, simply get in...



Posted by: puneet

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Q: Are you King??

A(Lier):YES

B(Truth Teller): NO

How can gatekeeper is king..:)



Posted by: Deep

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The question that should be asked should be such that we know the answer of that particular question.Right!!
So the most probable one in this case is "What do you think Which is peaceful,Heaven or Hell?".
We know Heaven is where peace of soul lies.So we will quickly judge the person who is speaking truth and who is false.



Posted by: Neeraj

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Assume tat the color of the door is black or any color you required. We can ask question to anyone as "Wats the color of the door?". If he replies correctly wat color the door is , then he is the truth teller and another one is lier.



Posted by: Karthikeyan P B

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The answer is simple.
*Frist we will ask one question at anybody(among two),which we have already known.
1)If we ask a question to true person ,the answer would correct. Then we find the true person.
2)If we ask a question to lier, the answer would wrong.Then we find the lier person.



Posted by: ashok

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We should ask one of them

"What should other man tell if i ask which is the door to heaven?"

Go through the door which he hasn't said



Posted by: santhababharathi.s

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Just simply ask them where are they from .. The good guy will tell the truth .. and the bad guy will say that he comes from the heaven ... :)



Posted by: kristijan

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the question is this is hell?
because if u ask to hell doorkeeper he will tell lie. but the heaven will tell yes so we will go inside of heaven.



Posted by: hariharan

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first he ask him
are you man



Posted by: Golla SivaNagaRaju

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