Who's online
There are currently 141 users and 1032 guests online.
Online users
Recent comments
- mornin dragon... but wats
1 sec ago - Happylady
30 sec ago - ah non sense
32 sec ago - Good mornign Happyday... I
56 sec ago - Beers on ground
2 min 8 sec ago - WHATS THE ANSWER??????
2 min 27 sec ago - Ahhh soorreeeeee was busy
2 min 38 sec ago - jaan you know boss, he have
2 min 40 sec ago - did u say B###s ?? now this
2 min 51 sec ago - speaking of Jump. Can we
3 min 24 sec ago
The twin-brothers
A traveler, on his way to a certain village, reaches a road junction, where he can turn left or right. He knows that only one of the two roads leads to village, but unfortunately, he does not know which one. Fortunately, he sees two twin-brothers standing at the road junction, and he decides to ask them for directions.
The traveler knows that one of the two brothers always tells the truth and the other one always lies. Unfortunately, he does not know which one always tells the truth and which one always lies.
Question:
How can the traveler find out the way to village by asking just "one" question to "one" of the two brothers?
 |
|
 |
Events
- Four for Three Seafood Buffet(Events)(Now)
- Summer Lunch(Events)(Now)
- Indian Cultural Centre Summer Camp(Events)(Now)
- Stretching Classes(Events)(Now)
- Iced Coffee and Ice Cream Cakes(Events)(Now)
- Qatar International Boat & Marine Expo 2008(Events)(97 days)
Guide to Qatar
- Qatar Schools Database
- Residents Guide to Qatar
- Siteseeing in Qatar
- Traffic Rules
- Attending a Qatari Wedding
- Gift ideas from Qatar
- Buying a used car in Qatar
- Renting in Qatar
- What to consider when renting in Qatar
- Preparing for Winter in Qatar
- Blackberry phones in Qatar
- Old Qatar
- What's Happening in Qatar
- Online Shopping in Qatar
| Site Sections : | |
| Classifieds : | |
| Site Information : |
 |
Qatar Living is an online community for everyone living in or interested in the State of Qatar. All trademarks and copyrights on this page are owned by their respective owners. Comments are owned by the Poster. The views reflected by members on this site are their own and do not necessarily reflect those of Qatar Living. Qatar Living is not responsible for any material submitted to the site. Any material posted is not endorsed, reviewed or approved by the Website Owner. |
Comments
IOU said
I will give it a try! ...Given:
One Question
Two possible answers
Correct Answer = ? (right direction)
Have to worry who is the liar!
Hmmnnn....
Ask the first one to ask his brother where is the right direction then if he lied about the answer, you'll know where to go ;-)
Cheers!
"I find it wholesome to be alone the greater part of time. To be in company, even with the best, is soon wearisome and dissipating. I love to be alone, I never find a companionable solitude"
jilfer said
IOU, How do we know "he" ...IOU, How do we know "he" lied about the answer and which is the correct way to go??? please do clarify
--------------------------------------------------------------------
"Nobody can hurt me without my permission"
--------------------------------------------------------------------
IOU said
hey jilfer ...you're the one who ask this, you should know! J/k
I will explain later ok, that's a wild guess!
Kinda swamped here with work and don't want to feel guilty of being a "slacker" lol
Cheers!
"I find it wholesome to be alone the greater part of time. To be in company, even with the best, is soon wearisome and dissipating. I love to be alone, I never find a companionable solitude"
sentibhim said
ilfer ...Traveler asked .....Hey twins which is the way to village xxxx.
Than lier one replied...We are not twins,you can go from this way.
Than he moved to opposite direction.Am i right ?
"Drink Beer Save Water"
jilfer said
IOU....take your time...your ...IOU....take your time...your line of thinking is correct...u just have to give the proper answer.....
--------------------------------------------------------------------
"Nobody can hurt me without my permission"
--------------------------------------------------------------------
jilfer said
sentil.. ...how do you know the one replied was the lier??
--------------------------------------------------------------------
"Nobody can hurt me without my permission"
--------------------------------------------------------------------
sentibhim said
jilfer ...In common sense,He asked Hey twins ....
The lier one replied we r not twins....than he came to know he was the lier one.We can know the twins by their face.
"Drink Beer Save Water"
jilfer said
sentil ..."Hey Twins" is not a question...and they need not answer that we are not twins..your answer is based on assumption..
Read My question properly..he should ask "one" question to "one" of the two brothers..
--------------------------------------------------------------------
"Nobody can hurt me without my permission"
--------------------------------------------------------------------
shreeya said
Road to Jilfer's village..... ...Traveler asks to one of the twins " If I ask your brother to show me the road to village, which road would he suggest?"
If the liar is answering, he is definitely going to show him a wrong road.
If the one who always speaks truth is giving the answer than to the above question he will also show the wrong road.
In any case the traveler have to take the other road.
Timbo said
ask one twin what would the ...ask one twin what would the other twin say is the correct way to go.
If the twin you ask is the liar he will say that the other twin would say to go the wrong way.
If the twin you ask is the truthful twin he will say that the other twin will also say the wrong way to go.
Therefore you know which is right and which is wrong
jilfer said
Shreya ..you are right..ask ...Shreya ..you are right..ask any one brother "to show the road to the village, which the other brother will show if the question is asked to him"
And take the opposite direction.
--------------------------------------------------------------------
"Nobody can hurt me without my permission"
--------------------------------------------------------------------
shreeya said
is it Jilfer? Come to my ...is it Jilfer? Come to my home and "ll show you all the maps of the roads and the sketches of the twins made by me, that too with permanent marker!!! In fact I was like sooo desperate to find out the answer!!
jilfer said
lol shreeya..u are pulling ...lol shreeya..u are pulling my leg.....this is one of the simplest ones...i just put easy ones coz no one answers even the simple ones in QL
--------------------------------------------------------------------
"Nobody can hurt me without my permission"
--------------------------------------------------------------------
sentibhim said
jilfer,next one ...ha hha ahhaha
he already know one is lier and one is the truth,so he asked the brother who never lie.you got the answer.
"Drink Beer Save Water"
shreeya said
Jilfer, can you take this ...Jilfer, can you take this one?
There is a magical box, When you put a ball in it, it gets double at every second. Like if you put 1 ball-next sec 2-next sec 4-next sec 8-next sec 16.....so on. Thus, the box gets full at 60th second or say in a minute.
So the question is how much time the box takes to get half-full?
This question is from MCA Entrance exam, Pune.
jilfer said
shreya ...59 sec ...--------------------------------------------------------------------
"Nobody can hurt me without my permission"
--------------------------------------------------------------------
shreeya said
Ohhhh.....nooooo...Jilfer.. Y ...Ohhhh.....nooooo...Jilfer..
You are tooo fast...Don't you need to draw the box, balls and the watch ticking...?..lol
jilfer said
I used the paint in the ...I used the paint in the computer to draw.....guess it was much faster...Y dont u try the maths puzzle..you can take plenty of papers to do that one...even a calculator if the going get tough...
--------------------------------------------------------------------
"Nobody can hurt me without my permission"
--------------------------------------------------------------------
gypsy gal said
Shreeya..jilfer ...Damn..you guys so fast....by the time I see the question there are already answers..so wont feel like copying the answer..lol All of your are genius here in QL.
Shreeya all set?
han19 said
shreeya, i cant forget the ...shreeya, i cant forget the answer to your puzzle because quite recently i was trying to explain that answer to a friend of mine, who just didnt get it.
it was for CAT exam, and it has bacteria in place of ball.
happy heart
DRIVE SAFE,someone is waiting for you at home