337 replies to this topic

[Kryptanyte]

I have two riddles:

Riddle One!

A man who lives on the tenth floor takes the elevator down to the first floor every morning and goes to work. In the evening, when he comes back; on a rainy day, or if there are other people in the elevator, he goes to his floor directly. Otherwise, he goes to the seventh floor and walks up three flights of stairs to his apartment.
Can you explain why?

Riddle Two!

Alexander is stranded on an island covered in forest.

One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alexander survive the fire? (There are no buckets or any other means to put out the fire)

Good luck people

[amtra5]

Kryptanyte, on 20 March 2013 - 10:17 PM, said:

I have two riddles:

Riddle One!

A man who lives on the tenth floor takes the elevator down to the first floor every morning and goes to work. In the evening, when he comes back; on a rainy day, or if there are other people in the elevator, he goes to his floor directly. Otherwise, he goes to the seventh floor and walks up three flights of stairs to his apartment.
Can you explain why?

Riddle Two!

Alexander is stranded on an island covered in forest.

One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alexander survive the fire? (There are no buckets or any other means to put out the fire)

Good luck people

1: He is short

[KaoS]

1lann, on 20 March 2013 - 08:45 PM, said:

Which means if the pattern continues, that means everybody on the island disappears on the 100th day?

I looked up the puzzle online and saw the same answer as you give here but I disagree... think about it

if you are a brown eyed villager you will see 100 blue eyed villagers and think to yourself: if they all vanish on the 100th day then my eyes are brown however if they do not then my eyes are blue

on the 100th day all of the blue eyed villagers will vanish showing clearly that you have brown eyes, then the NEXT night you will vanish

so in total it is 101 days

oh and in the puzzle you failed to mention that the villagers are aware that they will vanish if they know their eye color, the whole logic of the answer depends on them knowing that

EDIT: in fact the villagers never get told that there is only 2 colors of eyes... all the brown eyes would stay forever because they could be the one person with green eyes

Edited by KaoS, 21 March 2013 - 12:33 AM.

[Kryptanyte]

amtra5, on 20 March 2013 - 11:51 PM, said:

Kryptanyte, on 20 March 2013 - 10:17 PM, said:

-snip-
Good luck people

1: He is short

That doesn't really answer it. Just saying he is short doesn't explain why he does those particular things...

[ikke009]

KaoS, on 21 March 2013 - 12:25 AM, said:

1lann, on 20 March 2013 - 08:45 PM, said:

Which means if the pattern continues, that means everybody on the island disappears on the 100th day?

I looked up the puzzle online and saw the same answer as you give here but I disagree... think about it

if you are a brown eyed villager you will see 100 blue eyed villagers and think to yourself: if they all vanish on the 100th day then my eyes are brown however if they do not then my eyes are blue

on the 100th day all of the blue eyed villagers will vanish showing clearly that you have brown eyes, then the NEXT night you will vanish

so in total it is 101 days

oh and in the puzzle you failed to mention that the villagers are aware that they will vanish if they know their eye color, the whole logic of the answer depends on them knowing that

EDIT: in fact the villagers never get told that there is only 2 colors of eyes... all the brown eyes would stay forever because they could be the one person with green eyes

That is true , but another question is, why do the villagers wait 90-something days confirming something they already know? (namely the fact that there are 1, 2, 3 etc. blue-eyed people)..
What is the additional value of the guru, since people can clearly see other people with blue eyes?

[ikke009]

Kryptanyte, on 21 March 2013 - 01:13 AM, said:

amtra5, on 20 March 2013 - 11:51 PM, said:

Kryptanyte, on 20 March 2013 - 10:17 PM, said:

-snip-
Good luck people

1: He is short

That doesn't really answer it. Just saying he is short doesn't explain why he does those particular things...

If i were poor alexander i would run to the far west end of the island, west of where lightining struck, and make myself a small cave to hide in untill the forest is done burning... (for question 2 that is)

[ikke009]

redeye83, on 20 March 2013 - 01:42 PM, said:

I see without seeing. To me, darkness is as clear as daylight. What am I?

blind?

[redeye83]

ikke009, on 21 March 2013 - 01:36 AM, said:

redeye83, on 20 March 2013 - 01:42 PM, said:

I see without seeing. To me, darkness is as clear as daylight. What am I?

blind?

Close

[ikke009]

dreaming?

[KaoS]

ikke009, on 21 March 2013 - 01:31 AM, said:

That is true , but another question is, why do the villagers wait 90-something days confirming something they already know? (namely the fact that there are 1, 2, 3 etc. blue-eyed people)..
What is the additional value of the guru, since people can clearly see other people with blue eyes?

they don't wait to find out that there are 1,2,3 etc other blind people. they wait to find out how other people perceive them and the effect that will have on their behavior, through this they can determine what the others see them as

[KaoS]

Kryptanyte, on 21 March 2013 - 01:13 AM, said:

That doesn't really answer it. Just saying he is short doesn't explain why he does those particular things...

he is too short to reach the floor 10 button, he can only reach the floor 7 button, there was a more complicated version of this puzzle where his behavior changed with the weather

[Kryptanyte]

KaoS got it, now who can get the alexander one? Theres a lot of speculation about this one.

[Darky_Alan]

ikke009, on 19 March 2013 - 12:49 AM, said:

Riddle:
On an island there are 100 blue-eyed and 100 brown-eyed people. There is also one grey-eyed guru, who is blind.
The people on the island are purely logical, if there is a conclusion to be drawn from something, they do so instantly.
The people do not know the colour of their own eyes, but they keep track of the colours of every other person's eyes.
There is no way of communication on the island, nor are there any reflective objects.
Every day, one minute before midnight, every islander who knows the colour of his eyes magically vanishes from the island.
On day 1 the guru speaks to all islanders: "I can see blue eyes"
How many people vanish on which night? When is everyone gone (not counting the guru)?

No idea if it got solved, I haven't scrolled to the next pages, but thanks to eleure I got it.

They ALL vanish. There's 200 people, half have blue half have brown, all they have to do is count how many people with blue eyes they know, if they know 100 people with blue eyes, their eyes are brow, they vanish. They just keep track of how many X colored eye people have vanished, but generally they'd all vanish at once if their drive is lgic they'd seek to sort this out immedietly causing everyone to vanish at once.

[ikke009]

I think I said this before but they don't know how many people have brown eyes and how many people have blue eyes, that information is only available to the solver because it is needed to solve the question.

[KaoS]

they don't know the exact numbers

EDIT: ninja... I had the tab open in the background and didn't get that post

[TheOddByte]

Shazz, on 20 March 2013 - 02:49 PM, said:

You ask the aliens one by one: "Are there any aliens with green or red feet in this group?"
The green ones will say: "Yes, there are."
The red ones will say: "Nope."

Uhmm.. The red ones would say: Yes they are.
Since they lie!
And the green ones would also say that since they also have green feet..

[ikke009]

Hellkid98, on 22 March 2013 - 01:57 AM, said:

Shazz, on 20 March 2013 - 02:49 PM, said:

You ask the aliens one by one: "Are there any aliens with green or red feet in this group?"
The green ones will say: "Yes, there are."
The red ones will say: "Nope."

Uhmm.. The red ones would say: Yes they are.
Since they lie!
And the green ones would also say that since they also have green feet..

The statement is "There are red or green feet in this room", this statement is true
So the red feet deny this statement and the green feet confirm this.. The answer is correct.

Riddle:
Three gods A, B, and C are called, in no particular order, True, False, and Random. True always speaks truly, False always speaks falsely, but whether Random speaks truly or falsely is a completely random matter. Your task is to determine the identities of A, B, and C by asking three yes-no questions. each question must be put to exactly one god. The gods understand English, but will answer all questions in their own language, in which the words for yes and no are da and ja, in some order. You do not know which word means which.

• It could be that some god gets asked more than one question (and hence that some god is not asked any question at all).
  
• What the second question is, and to which god it is put, may depend on the answer to the first question. (And of course similarly for the third question.)
  
• Whether Random speaks truly or not should be thought of as depending on the flip of a coin hidden in his brain: if the coin comes down heads, he speaks truly; if tails, falsely.

[TheOddByte]

Derp..
Didn't read it correctly

[Shazz]

ikke009, on 22 March 2013 - 02:17 AM, said:

Hellkid98, on 22 March 2013 - 01:57 AM, said:

Shazz, on 20 March 2013 - 02:49 PM, said:

You ask the aliens one by one: "Are there any aliens with green or red feet in this group?"
The green ones will say: "Yes, there are."
The red ones will say: "Nope."

Uhmm.. The red ones would say: Yes they are.
Since they lie!
And the green ones would also say that since they also have green feet..

The statement is "There are red or green feet in this room", this statement is true
So the red feet deny this statement and the green feet confirm this.. The answer is correct.

Lol, did I solve it? I'm usually bad with riddles.

[ikke009]

redeye83, on 21 March 2013 - 02:03 AM, said:

ikke009, on 21 March 2013 - 01:36 AM, said:

redeye83, on 20 March 2013 - 01:42 PM, said:

I see without seeing. To me, darkness is as clear as daylight. What am I?

blind?

Close

Thought the answer was blinded by light, which would make sense because then you can watch, but will not see, and darkness will literaly be as clear as daylight.. Then I googled the answer xD Clever riddle but I might have slightly outwitted it