Ask anybody : If I ask other guy about hell, what does he 
tell?

Go through the door guy points to...Enjoy

Lets apply probability. 

Hell-- The guard always lies..
Suppose you ask him " Are you from Hell? he wud definitely 
answer "NO" as he always lies. If you ask him " Are you 
from heaven?" He wud say "Yes".

Heaven-- The guard always speaks truth.
Suppose if you ask him "Are you from Hell?" He wud say "NO".
If you ask him "Are you from heaven?He wud say "Yes".

As you are supposed to answere only one question...

If the guard's answer is NO, then it is Hell
If the guard's answer is Yes then it is Heaven

Kindly ask correct questiopn and then apply probability. 
Question is "If I ask other guy about hell, what does he 
tell?"
Analise this question and tell me weather it is sufficient 
of not
Thanks 

Pankaj Goyal
p73_73@yahoo.com

Ask this question to any security guard and the follow the 
way what he is showing if you want to go for heaven or 
follow the opposite to go for hell...
- Which way will he show if I ask the other gate security 
guard "which is the way to hell ?"

i feel venkat was logically correct.....

cheers venkat

Venkat: good theory, but if you can only ask 1 question how 
will you get 2 answers? or worse who will you believe that 
says they are from heaven first??  This is a sticky wicket..

I assume u have to ask them both the same question. 
So what about asking something like "are you a guard" or
"are you guarding a door" meaning something that is
obviously the same for both of them, then you can tell if
one is lying, and go through the other door.

sorry to say venkat ....i dought that u'r answer is 
wrong.....i will prove it 

u'r allowed to answer only one question so 
if u ask "are u from hell" to heaven gaurd and he say "No" 
and u enter ...it will be heaven
if u ask the same question "are u from hell" to hell gaurd 
and he say "No" and u enter it will be hell ....so u'r 
answer is wrong

and i agree with P73_73@yahoo.com answer .....if u want to 
prove u'r thinking out of the box then u can say GZ answer

I feel GZ is right.

ramumcato@yahoo.com

ask any of them, "Will heaven guard always tell truth?"
     If he says "yes",he is heaven guard(he is supposed to 
say truth).
     If he says "no", then he is hell guard.(he is supposed 
to say wrong answer.)

I am sure GZ is right

here the point to be noted that we have to ask only one
question and it may be of any type(because as per the
requirements the type of question is not mentioned)
so firstly go for smoke & sanity test case:
the solution is very simple
that is
ask to any one of the guard the folowing question:
"R U A GUARD?"
now there can be only two possible outcomes(reply):
either yes or no
if u r questioning to the right guard then surely he will
say:yes
and the rong one wll alwys reply with :no

   ..........any coments wll be well accepted 
Rajiv Kumar Jindal 
(Test Engineer,Noida)

Rajeev appears to be more correct than GZ. from GZ point of 
view we have to ask one question but restriction is not 
there on number of gurards. one good question can resolve 
the confusion..as he asked.

"Whats 1+1?"
the guy from hell would have to tell a lie and the guy from 
heaven the truth??

Ask one gaurd that... Are you a gaurd??
If he answered No.He is Hell guy?
so Go to the other door That should be Heaven.
Else 
He say I am Gaurd!
He is a heaven guy. Go with him...

I think that the hell guy will not have wings and the 
heaven guy maybe has wings.