The Warden and 23 prisoners

The warden meets with 23 new prisoners when they arrive. He tells them, “You may meet today and plan a strategy. But after today, you will be in isolated cells and will have no communication with one another.

“In the prison is a switch room, which contains two light switches labeled 1 and 2, each of which can be in either up or the down position. I am not telling you their present positions. The switches are not connected to anything.

“After today, from time to time whenever I feel so inclined, I will select one prisoner at random and escort him to the switch room. This prisoner will select one of the two switches and reverse its position. He must flip one switch when he visits the switch room, and may only flip one of the switches. Then he’ll be led back to his cell.

“No one else will be allowed to alter the switches until I lead the next prisoner into the switch room. I’m going to choose prisoners at random. I may choose the same guy three times in a row, or I may jump around and come back. I will not touch the switches, if I wanted you dead you would already be dead.

“Given enough time, everyone will eventually visit the switch room the same number of times as everyone else. At any time, anyone may declare to me, ‘We have all visited the switch room.’

“If it is true, then you will all be set free. If it is false, and somebody has not yet visited the switch room, you will all die horribly. You will be carefully monitored, and any attempt to break any of these rules will result in instant death to all of you”

What is the strategy they come up with so that they can be free?

start thinking.. your time starts now…

got an answer post it here.. dint get the answer?. keep thinking..

P.S. This was a question from google interview.

Think out of the box

Very very Impressive Questions and Answers.

Question 1:
You are driving along in your car on a wild, stormy night, it’s raining heavily, when suddenly you pass by a bus stop, and you see three people waiting for a bus:

An old lady who looks as if she is about to die. An old friend who once saved your life. The perfect partner you have been dreaming about.

Which one would you choose to offer a ride to, knowing very well that there could only be one passenger in your car?

This is a moral/ethical dilemma that was once actually used as part of a job application.

* You could pick up the old lady, because she is going to die, and thus you should save her first;
* or you could take the old friend because he once saved your life, and this would be the perfect chance to ! pay him back.
* However, you may never be able to find your perfect mate again.

The candidate who was hired (out of 200 applicants) had no trouble coming up with his answer. Guess what was his answer?

He simply answered:

“I would give the car keys to my Old friend and let him take the lady to the hospital. I would stay behind and wait for the bus with the partner of my dreams.”

Sometimes, we gain more if we are able to give up our stubborn thought limitations. Never forget to “Think Outside of the Box.”

Question 2:
What will you do if I run away with your sister?”

The candidate who was selected answered ” I will not get a better match for my sister than you sir”

Question 3:
Interviewer (to a student girl candidate) – What is one morning you woke up & found that you were pregnant.

Girl – I will be very excited and take an off, to celebrate with my husband.

Normally an unmarried girl will be shocked to hear this, but she managed it well. Why I should think it in the wrong way, she said later when asked

Question 4:
Interviewer: He ordered a cup of coffee for the candidate. Coffee arrived kept before the candidate, then he asked what is before you?

Candidate: Instantly replied “Tea”

He got selected.

You know how and why did he say “TEA” when he knows very well that coffee was kept before.

(Answer: The question was “What is before you (U – alphabet)
Reply was “TEA” ( T – alphabet)

Alphabet “T” was before Alphabet “U”

Question 5:

The interviewer asked to the candidate “This is your last question of the interview. Please tell me the exact position of the
center of this table where u have kept your files.”

Candidate confidently put one of his finger at some point at the table and told that this was the central point at the table. Interviewer asked how did u get to know that this being the central point of this table, then he answers quickly that sir u r not likely to ask any more question, as it was the last question that u promised to ask.

And hence, he was selected as because of his quick-wittedness.

This is What Interviewer expects from the Interviewee.