The Two Doors Brainteaser

Jeff Altman, The. Big Game Hunter offers an answer to the classic brainteaser. “You have two doors  and two people that you can ask questions of. One always tells the truth.  One always lies. You can only ask one question of one of the people. What’s the question you ask?


I have one of those hedge fund brainteaser questions for today – – the two doors brainteaser.Here’s how it goes.

There are two doors. Behind one door is a job offer. Behind the other door is all the pain and suffering in the world. There are two people outside them. One is someone who always tells the truth; one is someone who always lies. You can only ask one question of one of them. What is the question you should ask to figure out what door it is that has the job behind it?

So what you do is pick one of the guys and ask, “what with the other guy say is the correct door to go to?”

If the other person is the liar, he would tell you the wrong door. If he is the truth teller he’s going to tell you the correct door.

If the person you asked the question of is the honest one, he will point you to the wrong door (after all, he’s talking about the liar). If that person is the liar, your point you to the wrong door.

When you evaluate the choices, whatever door they pointed to, choose the opposite one.


Do you think employers are trying to help you? You already know you can’t trust recruite

rs—they tell as they think you need to know to take the job they after representing so they collect their payday.

The skills needed to find a job are different yet complement the skills needed to do a job.

Jeff Altman, The Big Game Hunter has been a career coach and recruiter for what seems like one hundred years. is there to change that with great advice for job hunters—videos, my books and guides to job hunting, podcasts, articles, PLUS a community for you to ask questions of PLUS the ability to ask me questions where I function as your ally with no conflict of interest answering your questions.

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