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View Full Version : The Brainteaser #1: Switchers


Mrlucky77
10-08-2010, 06:43 PM
Warning: Not approved by anyone but me. :awesome:



Each Whenever The Hell I Feel Like, I will post a problemsolving brain teaser.

-----------------------------

THE SWITCHER BRAIN TEASER.

Lets say there are five people in front of you. Your goal: Find how to find the Truth Teller.


RULES AND STUFF:

YOU MUST SHOW YOUR WORK.

YOU MAY ONLY ASK TWO QUESTIONS TO THE META-PEOPLE. YOU MAY ONE TO TWO PEOPLE, OR TWO TO ONE PERSON.

A SWITCHER WILL ALWAYS SWITCH BETWEEN TELLING THE TRUTH OR A LIE EVERY TIME YOU ASK THEM. YOU DO NOT KNOW IF THEY ARE TELLING THE TRUTH OR NOT.

FOUR PEOPLE ARE SWITCHERS. ONLY ONE IS THE TRUTH TELLER.



THE FIRST PERSON TO PM ME THE CORRECT METHOD OF FINDING THE TRUTH TELLER WILL BE PUT UP ON THE NEXT TEASER THREAD.


Ask your questions.

The prize: 500 Nation gold! Hopefully I can get this funded by a moderator.


Edit: Yay! I got funded.
Osayidan
10-08-2010, 06:48 PM
You got my funding. Need to get rid of this 5 million gold.
Science
10-08-2010, 06:58 PM
We can ask an unlimited amount of questions, but only 2 at a time?
Intex
10-08-2010, 07:04 PM
What do they respond with when they lie?
Is it an opposite response (e.g. No instead of Yes).
Mrlucky77
10-08-2010, 07:08 PM
We can ask an unlimited amount of questions, but only 2 at a time?

No, max amount of two questions.


What do they respond with when they lie?
Is it an opposite response (e.g. No instead of Yes).

It is simply a lie, therefore you must word your questions carefully. (Also, for yes/no questions, it is an opposite response.)
SuperSoulful
10-08-2010, 07:11 PM
Do they lie willfully or is it just like, they tell the truth, then a lie, then the truth, then a lie, ect.?
Is it a pattern or just up to their whimsy?

Also does me asking this help me solve the problem or does it have nothing to do with the answer?
:oops:
Mrlucky77
10-08-2010, 07:18 PM
Do they lie willfully or is it just like, they tell the truth, then a lie, then the truth, then a lie, ect.?
Is it a pattern or just up to their whimsy?

Also does me asking this help me solve the problem or does it have nothing to do with the answer?
:oops:

This is a pattern. They are hired to say a false answer after a truthful one, and a truthful answer after a false answer.

For the second part, I shall not tell you.
pkMaster
10-08-2010, 07:41 PM
I've got 2 questions.

1) Are the 5 man all able to hear the responses the others made or are they completely oblivious of the other's responses?

2) Are we allowed to PM you more than one solution?
Mrlucky77
10-08-2010, 07:46 PM
I've got 2 questions.

1) Are the 5 man all able to hear the responses the others made or are they completely oblivious of the other's responses?

2) Are we allowed to PM you more than one solution?

Yes, but I preferr you do a max of two PMs. I will only judge a person correct if their LATEST one is correct.

For question 1, yes, all five people are able to hear the responses the other made, but remember, only two questions in total to the people are allowed.
pkMaster
10-08-2010, 09:39 PM
Disreguard this post. I realized I made a mistake in my logic

I think I have a solution, but I need to ask one more question. Are you allowed to move the 5 people around in a physical space (ie. forming a circle or a straight line) or are you only allowed to ask them questions and nothing else?
Kueh
10-08-2010, 09:55 PM
I realized that the answer I came up with can be re-worded to form 4 different answers.

And they all only need 1 question.

The fact that I only have to ask one question makes me feel like my answer is somehow wrong.
SuperSoulful
10-09-2010, 12:18 AM
Do they lie completely or can they half-lie if they are switchers?
I.E., can they tell something that is partially true, but also partially false?
Mrlucky77
10-10-2010, 05:20 PM
Do they lie completely or can they half-lie if they are switchers?
I.E., can they tell something that is partially true, but also partially false?

No, it must be a complete lie.
Intex
10-10-2010, 06:21 PM
By the way will you tell us if we got it right or only on the next brain teaser day?
Mrlucky77
10-10-2010, 07:03 PM
By the way will you tell us if we got it right or only on the next brain teaser day?

I'll post the most correct one and my solution to compare it with.


Also I will reply to you guys'.
Intex
10-10-2010, 07:14 PM
I'll post the most correct one and my solution to compare it with.


Also I will reply to you guys'.

You haven't responded to my PM though :o
Mrlucky77
10-10-2010, 08:26 PM
You haven't responded to my PM though :o

I will soon.

Jeez.
jark007
10-10-2010, 08:29 PM
wait so there is a pattern but it isn't necessarily Y,N,Y,N?
Mrlucky77
10-10-2010, 08:32 PM
wait so there is a pattern but it isn't necessarily Y,N,Y,N?

The switchers will ALWAYS switch from lie to truth to lie to truth.

HOWEVER, you do not know which one the switchers start with. They could start with a lie or a truth, but they will always switch every time.
jark007
10-10-2010, 08:34 PM
The switchers will ALWAYS switch from lie to truth to lie to truth.

HOWEVER, you do not know which one the switchers start with. They could start with a lie or a truth, but they will always switch every time.

Yes!

EDIT: forgot to show my work in PM... what do u mean by show your work? is it like if i ask this they say x or x, so i ask x and they answer x?
Kueh
10-11-2010, 06:54 PM
Is there an answer yet? Or is this one of those, "I'll let the suspense build, then let it die, then forget this ever happened." sort of things?
Nghi
10-20-2010, 10:17 PM
So is there a winner yet?