Hedge Fund Brainteasers: The Truth Teller & The Liar
By Jeff Altman, The Big Game Hunter
Jeff Altman, The Big Game Hunter explains how to answer another of those tricky brainteaser questions that hedge funds use — this one has two guards, One lies and one tells the truth and one question that you can ask. What is that question? Yep it makes a lot more than I do
Hedge Fund Brainteasers: The Tournament Brainteaser
Today I want to offer up another 1 of those “wonderful” hedge fund questions. There are different nicknames for this one, but I’m going to call it, “the truth teller and the liar.”
Here’s the scenario. You walking down the hallway and see 2 doors with one guard in front of each door. The they both know the correct answer, but one always gives the correct answer and the other one always lies. You only have one question that you can ask. Who do you ask and how do you choose?
Remember, only one question.
Here’s how to answer the question. The short version is, whatever answer you get, choose the opposite one. The reason for it is simple.
Here’s the answer the question one. Again, you choosing the opposite of what you were told. The question that you have to ask is, “if I ask the other guard which door to open, what would he tell me?” That’s the question you want to pose in order to figure out the answer.
If you ask the honest guard about what the other one would say, he knows that the guy is going to lie. The liar would tell you to go to the wrong door. Right? If you ask the longer question, he is going to lie to you. He is going to tell you the wrong answer.
No matter what, you have to go to the opposite door of what you are told.
Two Hedge Fund Brainteasers That Use Deflection
ABOUT JEFF ALTMAN, THE BIG GAME HUNTER
People hire Jeff Altman, The Big Game Hunter to provide No BS Career Advice globally because he makes many things in peoples’ career easier. Those things
can involve job search, hiring more effectively, managing and leading better, career transition, as well as advice about resolving workplace issues.
Schedule a discovery call at my website, www.TheBigGameHunter.us
He is the host of “No BS Job Search Advice Radio,” the #1 podcast in iTunes for job search with over 2600 episodes.
Website: https://www.TheBigGameHunter.us (schedule a paid coaching session, a free discovery call or ask questions using my Trusted Adviser Services)
LinkedIn: https://www.linkedin.com/in/TheBigGameHunter
Courses: https://www.TheBigGameHunter.us/courses
Books and Guides: https://www.TheBigGameHunter.us/books
Resume & LinkedIn Profile critiques www.TheBigGameHunter.us/critiques
We grant permission for this post and others to be used on your website as long as a backlink is included to www.TheBigGameHunter.us and notice is provided that it is provided by Jeff Altman, The Big Game Hunter as an author or creator.
In this video, Jeff Altman, The Big Game Hunter explains how to answer
another of those tricky brainteaser questions that hedge funds use — this
one has two guards, One lies and one tells the truth and one question that
you can ask. What is that question?
In this video, Jeff Altman, The Big Game Hunter explains how to answer another of those tricky brainteaser questions that hedge funds use — this one has two guards, One lies and one tells the truth and one question that you can ask. What is that question?
In this video, Jeff Altman, The Big Game Hunter explains how to answer another of those tricky brainteaser questions that hedge funds use — this one has two guards, One lies and one tells the truth and one question that you can ask. What is that question?
A variation I like to take on the riddle. There are two doors, one going to
a good, happy place, the other going to some terrible place, but only one
guard. You know that this guard either always tells the truth or always
lies, but you don’t know which of these is true. Can you guarantee you go
through that door to a good, happy place by asking the guard a single
question? If so, what question do you ask?
The answer is that, yes, you can guarantee that you go through the door to
a good, happy place simply by asking the guard “Which way would you say I
should go to get to the good, happy place?” A person who always speaks true
tells the truth about the way you should go. The liar has to lie about what
he would say, which would cause him to tell you the same answer as the
person who always speaks the truth.
+David Davison thanks for adding in that variation. It will help some people on their interviews
A variation I like to take on the riddle. There are two doors, one going to a good, happy place, the other going to some terrible place, but only one guard. You know that this guard either always tells the truth or always lies, but you don’t know which of these is true. Can you guarantee you go through that door to a good, happy place by asking the guard a single question? If so, what question do you ask?
The answer is that, yes, you can guarantee that you go through the door to a good, happy place simply by asking the guard “Which way would you say I should go to get to the good, happy place?” A person who always speaks true tells the truth about the way you should go. The liar has to lie about what he would say, which would cause him to tell you the same answer as the person who always speaks the truth.
A variation I like to take on the riddle. There are two doors, one going to a good, happy place, the other going to some terrible place, but only one guard. You know that this guard either always tells the truth or always lies, but you don’t know which of these is true. Can you guarantee you go through that door to a good, happy place by asking the guard a single question? If so, what question do you ask?
The answer is that, yes, you can guarantee that you go through the door to a good, happy place simply by asking the guard “Which way would you say I should go to get to the good, happy place?” A person who always speaks true tells the truth about the way you should go. The liar has to lie about what he would say, which would cause him to tell you the same answer as the person who always speaks the truth.
+David Davison thanks for adding in that variation. It will help some people on their interviews