Riddles thread

[shelley]

Sorry for the double post but I have a new riddle.

You are one of 20 prisoners on death row with the execution date set for tomorrow.

Your king is a ruthless man who likes to toy with his people's miseries. He comes to your cell today and tells you:

“I’m gonna give you prisoners a chance to go free tomorrow. You will all stand in a row (queue) before the executioner and we will put a hat on your head, either a red or a black one. Of course you will not be able to see the color of your own hat; you will only be able to see the prisoners in front of you with their hats on; you will not be allowed to look back or communicate together in any way (talking, touching.....)

(The prisoner in the back will be able to see the 19 prisoners in front of him
The one in front of him will be able to see 18…)

Starting with the last person in the row, the one who can see everybody in front of him, he will be asked a simple question: WHAT IS THE COLOR OF YOUR HAT?

He will be only allowed to answer “BLACK” or “RED”. If he says anything else you will ALL be executed immediately.

If he guesses the right color of the hat on his head he is set free, otherwise he is put to death. And we move on to the one in front of him and ask him the same question and so on…

Well, good luck tomorrow, HA HA HA HA HA HA!”

Now since you all can communicate freely during the night, can you find a way to guarantee the freedom of some prisoners tomorrow? How many?

I can guarantee the survival of all but one. Not very ruthless, is he?

Spoiler

The night before, the prisoners decide to count black hats, and decide that "black" means odd and "red" means even. The next day, the first prisoner who can see all the other 19 hats counts the number of black hats in front of him. He responds according to whether this number is odd or even. The next prisoner counts the black hats in front of him. If his odd/even count differs from the first prisoner's, his hat is black. Otherwise he answers red. The other prisoners keep track of how many black hats there have been so far, and using that information as well as the hats they can see they will be able to deduce the color of their own hat.

 

[mr. giggums]

Sorry for the double post but I have a new riddle.

You are one of 20 prisoners on death row with the execution date set for tomorrow.

Your king is a ruthless man who likes to toy with his people's miseries. He comes to your cell today and tells you:

“I’m gonna give you prisoners a chance to go free tomorrow. You will all stand in a row (queue) before the executioner and we will put a hat on your head, either a red or a black one. Of course you will not be able to see the color of your own hat; you will only be able to see the prisoners in front of you with their hats on; you will not be allowed to look back or communicate together in any way (talking, touching.....)

(The prisoner in the back will be able to see the 19 prisoners in front of him
The one in front of him will be able to see 18…)

Starting with the last person in the row, the one who can see everybody in front of him, he will be asked a simple question: WHAT IS THE COLOR OF YOUR HAT?

He will be only allowed to answer “BLACK” or “RED”. If he says anything else you will ALL be executed immediately.

If he guesses the right color of the hat on his head he is set free, otherwise he is put to death. And we move on to the one in front of him and ask him the same question and so on…

Well, good luck tomorrow, HA HA HA HA HA HA!”

Now since you all can communicate freely during the night, can you find a way to guarantee the freedom of some prisoners tomorrow? How many?

I can guarantee the survival of all but one. Not very ruthless, is he?

Spoiler

The night before, the prisoners decide to count black hats, and decide that "black" means odd and "red" means even. The next day, the first prisoner who can see all the other 19 hats counts the number of black hats in front of him. He responds according to whether this number is odd or even. The next prisoner counts the black hats in front of him. If his odd/even count differs from the first prisoner's, his hat is black. Otherwise he answers red. The other prisoners keep track of how many black hats there have been so far, and using that information as well as the hats they can see they will be able to deduce the color of their own hat.

Correct

Another...

A losing limit at a casino are put into place not so people don't lose all their money but so the the house doesn't. why?

 

[amostay2004]

I can guarantee the survival of all but one. Not very ruthless, is he?

He's definitely very ruthless to let 19 criminals go free like that

 

[Sa967St]

Yay Monty Hall problem. Dunno if it's been asked already, but:

Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?

I remember that there's a thread about the Monty Hall problem somewhere here, but I can't find it. :/

Spoiler

gogo switch, chances increase from 1 in 3 to 2 in 3 iirc

 

[mark3]

Yay Monty Hall problem. Dunno if it's been asked already, but:

Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?

I remember that there's a thread about the Monty Hall problem somewhere here, but I can't find it. :/

Spoiler

gogo switch, chances increase from 1 in 2 to 2 in 3 iirc

Spoiler

Actually it's from 1/3 to 2/3, but yes, your right.

 

[canadiancuber]

you're stuck in a room. no windows, just 2 doors. you have nothing with you.

Behind 1 door is a fire breathing dragon that will scorch you to death. behind the other isa room where the sun will burn you to death. the dragon never falls asleep and won't die. in each room (dragon or sun) there is a door that leaves to freedom.

Which door do you take to escape?

 

[mr. giggums]

you're stuck in a room. no windows, just 2 doors. you have nothing with you.

Behind 1 door is a fire breathing dragon that will scorch you to death. behind the other isa room where the sun will burn you to death. the dragon never falls asleep and won't die. in each room (dragon or sun) there is a door that leaves to freedom.

Which door do you take to escape?

Spoiler

Sun room because there are no windows.

 

[Forte]

you're stuck in a room. no windows, just 2 doors. you have nothing with you.

Behind 1 door is a fire breathing dragon that will scorch you to death. behind the other isa room where the sun will burn you to death. the dragon never falls asleep and won't die. in each room (dragon or sun) there is a door that leaves to freedom.

Which door do you take to escape?

Spoiler

Sun room because there are no windows.

Spoiler

The sun is inside the room, like in Spiderman 2

 

[canadiancuber]

you're stuck in a room. no windows, just 2 doors. you have nothing with you.

Behind 1 door is a fire breathing dragon that will scorch you to death. behind the other isa room where the sun will burn you to death. the dragon never falls asleep and won't die. in each room (dragon or sun) there is a door that leaves to freedom.

Which door do you take to escape?

Spoiler

Sun room because there are no windows.

Spoiler

The sun is inside the room, like in Spiderman 2

sorry lemme clear this up.theres an unbreakble magnifying glass kinda thing at the top where the sun shines directly through.

 

[crazymanjimbo46]

How do you get a fairy out of a bottle.

 

[Feryll]

you're stuck in a room. no windows, just 2 doors. you have nothing with you.

Behind 1 door is a fire breathing dragon that will scorch you to death. behind the other isa room where the sun will burn you to death. the dragon never falls asleep and won't die. in each room (dragon or sun) there is a door that leaves to freedom.

Which door do you take to escape?

Spoiler

Sun room because there are no windows.

Spoiler

The sun is inside the room, like in Spiderman 2

sorry lemme clear this up.theres an unbreakble magnifying glass kinda thing at the top where the sun shines directly through.

Spoiler

You are already free? Idk, you aren't really in any danger right then, and it says that each door has a door to freedom, as in the one that leads there in the first place.

 

[canadiancuber]

heres the original riddle:

One day, Thom found himself trapped in a room with 2 doors. Behond the first door was a room made of thick glass that would magnify the Sun's heat to fry whoever went in. Behind the secind door was a fire breathing dragon that would do the same. How did Thom escpe unscathed?

 

[Forte]

heres the original riddle:

One day, Thom found himself trapped in a room with 2 doors. Behond the first door was a room made of thick glass that would magnify the Sun's heat to fry whoever went in. Behind the secind door was a fire breathing dragon that would do the same. How did Thom escpe unscathed?

Kir

 

[chinesed00d]

heres the original riddle:

One day, Thom found himself trapped in a room with 2 doors. Behond the first door was a room made of thick glass that would magnify the Sun's heat to fry whoever went in. Behind the secind door was a fire breathing dragon that would do the same. How did Thom escpe unscathed?

Spoiler

open both and let the sun kill the dragon. Then steal it's gold!!!

 

[chinesed00d]

Riddle:
Two girls were stuck in a room with just 1 cup. what happened?

 

[Johannes91]

heres the original riddle:

One day, Thom found himself trapped in a room with 2 doors. Behond the first door was a room made of thick glass that would magnify the Sun's heat to fry whoever went in. Behind the secind door was a fire breathing dragon that would do the same. How did Thom escpe unscathed?

Spoiler

The dragon might never go to sleep, but the Sun does.

 

[nitrocan]

An electron was shot at a wall with two slits. What happened?

Million bucks to the correct answer

 

[Feryll]

An electron was shot at a wall with two slits. What happened?

Million bucks to the correct answer

The electron was impaled by the 2 slits that were launched.


Gimme my million bucks.

 

[Sakarie]

heres the original riddle:

One day, Thom found himself trapped in a room with 2 doors. Behond the first door was a room made of thick glass that would magnify the Sun's heat to fry whoever went in. Behind the secind door was a fire breathing dragon that would do the same. How did Thom escpe unscathed?

Spoiler

Kill the dragon with your teeth, and get yourself a fireproof armor of it's skin. Then walk out of the door you just unveiled. Then sell the armor!

 

[mr. giggums]

An electron was shot at a wall with two slits. What happened?

Million bucks to the correct answer

This.

Spoiler

http://en.wikipedia.org/wiki/Double-slit_experiment