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Here's one that is not to hard.
The square house: + Show Spoiler +A man builds a square house and puts a window on each side of the house. All the windows are facing south. One day the man sees a bear outside the window, what colour is the bear? Answer:+ Show Spoiler +Each window is facing south means that the house is on the north pole, the bear is a polar bear, which of course is white.
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United States4053 Posts
On December 06 2010 05:41 rotinegg wrote:Show nested quote +On December 06 2010 05:35 insectoceanx wrote:On December 05 2010 13:21 rotinegg wrote:I love riddles so much Solutions to some of them are below. Meanwhile, here's some riddles of my own that I picked up over the years! The apple truck and apple-eating squirrel+ Show Spoiler +There is an apple truck that can hold up to 1000 apples at any given time. It needs to make a delivery of 4000 apples from town A to B, which is 900 miles apart. However, there is a squirrel living in the truck that will eat 1 apple per mile. for example, if you load 1000 apples and take 4 trips, you will end up with 4x100 = 400 apples left. Try to maximize the number of apples you can deliver. Hint: + Show Spoiler +You can leave apples on the road along the way, and pick them up whenever you want, assuming your truck has the capacity to hold them. Answer + Show Spoiler +The goal is to have 2000 total at whatever distance you can get them. So to get 2000 total you load up 1000 4x and drop them off at 500 miles. This means you have 2000 apples at 400 miles away. Two trips of 1000 apples gives you 1200 apples at your final destination. you can do better + Show Spoiler + Take 4 trips of 1000 for 250 miles each to get 3000 at 250 miles. Then take 3 trips of 1000 for 1000/3 miles to get 2000 at 1750/3 miles. Drive these the rest of the way to get 4100/3 apples, which is about 1367
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I really like this one:
Three Princesses + Show Spoiler +You are a noble knight, who have just slain a vicious dragon. To reward you, the king will let you marry one of his three daughters. The daughters all look the same, and it is impossible to know them apart, unless you ask them. However, their personalities differ, a lot:
The youngest daughter always lie. The middle daughter lie half the time. The oldest daugters never lies.
After some concidering, you decide that it would be OK to live with either the youngest, or the eldest, because at least you know what they think.
When the time comes to choose, the king only allows you to ask one(1) "yes/no"-question to any one of the three daughters, and you don't know who is who.
What do you ask, to make sure you can make a choice, confident you will not choose the middle daughter?
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On December 06 2010 06:22 DumEN wrote:I really like this one: Three Princesses+ Show Spoiler +You are a noble knight, who have just slain a vicious dragon. To reward you, the king will let you marry one of his three daughters. The daughters all look the same, and it is impossible to know them apart, unless you ask them. However, their personalities differ, a lot:
The youngest daughter always lie. The middle daughter lie half the time. The oldest daugters never lies.
You obviously want to marry the oldest daughter, but when the time comes to choose, the king only allows you to ask one(1) "yes/no"-question to any one of the three daughters, and you don't know who is who.
What do you ask, to make sure you will know which daughter is oldest?
why would you want to marry the oldest one? <,< depends on ages i suppose, but if it's like 10 20 40 i'd vote for 20y/o on that note, + Show Spoiler +if i were to ask you "are you the middle daughter?" would you say yes?" the young daughter would say 'yes' to the middle question so 'no' overall. the oldest daughter would say 'no' to the middle question so 'no' overall and the middle daughter (lying) would say 'no' to the middle question so 'yes' overall and the middle daughter (truth) would say 'yes' to the middle question so 'yes' overall aka marry the one that says yes
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United States4053 Posts
On December 06 2010 06:22 DumEN wrote:I really like this one: Three Princesses+ Show Spoiler +You are a noble knight, who have just slain a vicious dragon. To reward you, the king will let you marry one of his three daughters. The daughters all look the same, and it is impossible to know them apart, unless you ask them. However, their personalities differ, a lot:
The youngest daughter always lie. The middle daughter lie half the time. The oldest daugters never lies.
You obviously want to marry the oldest daughter, but when the time comes to choose, the king only allows you to ask one(1) "yes/no"-question to any one of the three daughters, and you don't know who is who.
What do you ask, to make sure you will know which daughter is oldest?
+ Show Spoiler [not an answer] +ugh... this one hurts my head... seems to me that if you ask the middle daughter you're screwed... @above: I think the middle daughter randomly picks whether to lie or say the truth... like she could lie for the middle question but then answer truthfully overall
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On December 06 2010 06:33 JeeJee wrote:Show nested quote +On December 06 2010 06:22 DumEN wrote:I really like this one: Three Princesses+ Show Spoiler +You are a noble knight, who have just slain a vicious dragon. To reward you, the king will let you marry one of his three daughters. The daughters all look the same, and it is impossible to know them apart, unless you ask them. However, their personalities differ, a lot:
The youngest daughter always lie. The middle daughter lie half the time. The oldest daugters never lies.
You obviously want to marry the oldest daughter, but when the time comes to choose, the king only allows you to ask one(1) "yes/no"-question to any one of the three daughters, and you don't know who is who.
What do you ask, to make sure you will know which daughter is oldest?
why would you want to marry the oldest one? <,< depends on ages i suppose, but if it's like 10 20 40 i'd vote for 20y/o on that note, + Show Spoiler +if i were to ask you "are you the middle daughter?" would you say yes?" the young daughter would say 'yes' to the middle question so 'no' overall. the oldest daughter would say 'no' to the middle question so 'no' overall and the middle daughter (lying) would say 'no' to the middle question so 'yes' overall and the middle daughter (truth) would say 'yes' to the middle question so 'yes' overall aka marry the one that says yes
I'm sorry, i had forgotten some of the riddle, updated it now
Also, on your answer:
+ Show Spoiler +You can't ask them all one question; you get one question and you need to choose one daughter to ask it to.
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On December 06 2010 06:34 DumEN wrote:Show nested quote +On December 06 2010 06:33 JeeJee wrote:On December 06 2010 06:22 DumEN wrote:I really like this one: Three Princesses+ Show Spoiler +You are a noble knight, who have just slain a vicious dragon. To reward you, the king will let you marry one of his three daughters. The daughters all look the same, and it is impossible to know them apart, unless you ask them. However, their personalities differ, a lot:
The youngest daughter always lie. The middle daughter lie half the time. The oldest daugters never lies.
You obviously want to marry the oldest daughter, but when the time comes to choose, the king only allows you to ask one(1) "yes/no"-question to any one of the three daughters, and you don't know who is who.
What do you ask, to make sure you will know which daughter is oldest?
why would you want to marry the oldest one? <,< depends on ages i suppose, but if it's like 10 20 40 i'd vote for 20y/o on that note, + Show Spoiler +if i were to ask you "are you the middle daughter?" would you say yes?" the young daughter would say 'yes' to the middle question so 'no' overall. the oldest daughter would say 'no' to the middle question so 'no' overall and the middle daughter (lying) would say 'no' to the middle question so 'yes' overall and the middle daughter (truth) would say 'yes' to the middle question so 'yes' overall aka marry the one that says yes I'm sorry, i had forgotten some of the riddle, updated it now Also, on your answer: + Show Spoiler +You can't ask them all one question; you get one question and you need to choose one daughter to ask it to.
you just totally changed your question lol fine, then marry the one that says no or the one that doesn't say yes to my question, only one question necessary
edit:
On December 06 2010 06:34 infinitestory wrote:Show nested quote +On December 06 2010 06:22 DumEN wrote:I really like this one: Three Princesses+ Show Spoiler +You are a noble knight, who have just slain a vicious dragon. To reward you, the king will let you marry one of his three daughters. The daughters all look the same, and it is impossible to know them apart, unless you ask them. However, their personalities differ, a lot:
The youngest daughter always lie. The middle daughter lie half the time. The oldest daugters never lies.
You obviously want to marry the oldest daughter, but when the time comes to choose, the king only allows you to ask one(1) "yes/no"-question to any one of the three daughters, and you don't know who is who.
What do you ask, to make sure you will know which daughter is oldest?
+ Show Spoiler [not an answer] +ugh... this one hurts my head... seems to me that if you ask the middle daughter you're screwed... @above: I think the middle daughter randomly picks whether to lie or say the truth... like she could lie for the middle question but then answer truthfully overall
that could be a problem. edit: + Show Spoiler +but i don't think so actually, i remembered why i figured this one out fairly quickly.. i actually posted basically the same question before, here:http://www.teamliquid.net/blogs/viewblog.php?id=112187
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Yeh, sorry bout that =/
+ Show Spoiler + They only answer to the final question, which is "would you say yes?"
If the daughter you asked your question to were the youngest, she would answer yes. If the daughter was the oldest, she would answer no. If it was the middle one it would be either yes or no.
So you get nothing from asking that question, the one you asked could still be anyone.
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On December 06 2010 06:43 DumEN wrote:Yeh, sorry bout that =/ + Show Spoiler + They only answer to the final question, which is "would you say yes?"
If the daughter you asked your question to were the youngest, she would answer yes. If the daughter was the oldest, she would answer no. If it was the middle one it would be either yes or no.
So you get nothing from asking that question, the one you asked could still be anyone.
+ Show Spoiler +i highly disagree.. of course they only answer the final question, but the final question's answer depends on what they would have answered to the other question
for example, if i come up to you and say "if i were to ask you, "is your nickname dumen on TL", would you say yes?" the thought process is "yes my nickname is dumen, so yes i'd say yes to that question --> yes
it works.
and to clarify, i don't see how the youngest daughter would say yes here's the question again if i were to ask you "are you the middle daughter?" would you say yes?" she's thinking *ok i'm not the middle daughter, so i'd lie to that question and answer 'yes', so i would say yes but i can't tell him that since i'm a liar so i say*: no
repeat same reasoning for the other 2 daughters
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Love the thread, huge fan of this stuff.
One of my favourites goes like this (didnt see it posted yet):
+ Show Spoiler +Every man in a village of fifty couples has been unfaithful to his wife. Every woman in the village instantly knows when a man other than her husband has philandered (you know how small towns are) but not when her own husband has ("always the last to know"). The village's notolerance adultery statute requires that a woman who can prove her husband is unfaithful must kill him that very day. No woman would dream of disobeying this law.
One day, the queen, who is known to be infallible, visits the village. She announces that at least one husband has been unfaithful.
What happens?
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You're in a room, with no windows, no doors, no nothing. Only a mirror. Question 1: How did you get in there? Question 2: How do you get out?
Removing the answer for a bit =)
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On December 06 2010 06:48 JeeJee wrote:Show nested quote +On December 06 2010 06:43 DumEN wrote:Yeh, sorry bout that =/ + Show Spoiler + They only answer to the final question, which is "would you say yes?"
If the daughter you asked your question to were the youngest, she would answer yes. If the daughter was the oldest, she would answer no. If it was the middle one it would be either yes or no.
So you get nothing from asking that question, the one you asked could still be anyone.
+ Show Spoiler +i highly disagree.. of course they only answer the final question, but the final question's answer depends on what they would have answered to the other question
for example, if i come up to you and say "if i were to ask you, "is your nickname dumen on TL", would you say yes?" the thought process is "yes my nickname is dumen, so yes i'd say yes to that question --> yes
it works.
and to clarify, i don't see how the youngest daughter would say yes here's the question again if i were to ask you "are you the middle daughter?" would you say yes?" she's thinking *ok i'm not the middle daughter, so i'd lie to that question and answer 'yes', so i would say yes but i can't tell him that since i'm a liar so i say*: no
repeat same reasoning for the other 2 daughters
+ Show Spoiler + Ah yeah i failed at reading comprehension at that question, however: If you asked one of the daughters that, and she answers: "no" then you dont know which one it is, because the middle daughter might say that aswell.
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t3tsubo, please make an answer to Three hats before I go mad!
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On December 05 2010 13:12 t3tsubo wrote:Willywutang and the burning island of doom [tag: logic, thinkoutsidethebox]+ Show Spoiler +Willywutang is hanging out on a heavily forested island that's really narrow: it's a narrow strip of land that's ten miles long. let's label one end of the strip A, and the other end B. a fire has started at A, and the fire is moving toward B at the rate of 1 mph. at the same time, there's a 2 mph wind blowing in the direction from A toward B. what can Willywutang do to save himself from burning to death?! assume that Willywutang can't swim and there are no boats, jetcopters, teleportation devices, etc.. (if he does nothing, Willywutang will be toast after at most 10 hours, since 10 miles / 1 mph = 10 hours) Answer: + Show Spoiler +Start a fire farther down, the wind will move it in the opposite direction, so when the 2 flames meet they will have no more fuel to burn.
I think the Answer is partly correct or at least not precise: + Show Spoiler +if you start a fire lets say just before the end B of the island, the wind will blow it towards B and it will end there, leaving non-burnable space that is safe for Willywutang. You answer speaks of two meeting flames, which is only possible if the fire started at B or the wind is not blowing from A to B but from B to A.
or maybe it's a mistranslation of mine as to the direction of the wind
Edit: For Three Hats:
+ Show Spoiler +if A had seen 2 white hats he had known *I have a black hat*. So A saw either a white and a black or two black hats. If B had seen a white hat he had known *I have a black hat* because he know the two possible combinations for A to say no. He saw a black hat so he couldn't know. now you know that C was wearing a black hat.
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On December 06 2010 06:55 DumEN wrote:Show nested quote +On December 06 2010 06:48 JeeJee wrote:On December 06 2010 06:43 DumEN wrote:Yeh, sorry bout that =/ + Show Spoiler + They only answer to the final question, which is "would you say yes?"
If the daughter you asked your question to were the youngest, she would answer yes. If the daughter was the oldest, she would answer no. If it was the middle one it would be either yes or no.
So you get nothing from asking that question, the one you asked could still be anyone.
+ Show Spoiler +i highly disagree.. of course they only answer the final question, but the final question's answer depends on what they would have answered to the other question
for example, if i come up to you and say "if i were to ask you, "is your nickname dumen on TL", would you say yes?" the thought process is "yes my nickname is dumen, so yes i'd say yes to that question --> yes
it works.
and to clarify, i don't see how the youngest daughter would say yes here's the question again if i were to ask you "are you the middle daughter?" would you say yes?" she's thinking *ok i'm not the middle daughter, so i'd lie to that question and answer 'yes', so i would say yes but i can't tell him that since i'm a liar so i say*: no
repeat same reasoning for the other 2 daughters
+ Show Spoiler + Ah yeah i failed at reading comprehension at that question, however: If you asked one of the daughters that, and she answers: "no" then you dont know which one it is, because the middle daughter might say that aswell.
+ Show Spoiler +middle daughter would say 'yes' regardless of whether she's lying or not unless you're saying that she randomly decides to say yes/no, in which case you can't answer this question
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United States4053 Posts
On December 06 2010 07:00 Slakkoo wrote: t3tsubo, please make an answer to Three hats before I go mad! + Show Spoiler + A has no idea what color his hat is. But the only way he would know is if B and C were both wearing white hats. So B and C are not both wearing white hats. Armed with this knowledge, B looks at C's hat. If he saw C had a white hat, B would know he had a black hat, since B and C are not both wearing white hats. Since B doesn't know the color of his hat either, C determines that he must be wearing a black hat.
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On December 06 2010 07:04 JeeJee wrote:Show nested quote +On December 06 2010 06:55 DumEN wrote:On December 06 2010 06:48 JeeJee wrote:On December 06 2010 06:43 DumEN wrote:Yeh, sorry bout that =/ + Show Spoiler + They only answer to the final question, which is "would you say yes?"
If the daughter you asked your question to were the youngest, she would answer yes. If the daughter was the oldest, she would answer no. If it was the middle one it would be either yes or no.
So you get nothing from asking that question, the one you asked could still be anyone.
+ Show Spoiler +i highly disagree.. of course they only answer the final question, but the final question's answer depends on what they would have answered to the other question
for example, if i come up to you and say "if i were to ask you, "is your nickname dumen on TL", would you say yes?" the thought process is "yes my nickname is dumen, so yes i'd say yes to that question --> yes
it works.
and to clarify, i don't see how the youngest daughter would say yes here's the question again if i were to ask you "are you the middle daughter?" would you say yes?" she's thinking *ok i'm not the middle daughter, so i'd lie to that question and answer 'yes', so i would say yes but i can't tell him that since i'm a liar so i say*: no
repeat same reasoning for the other 2 daughters
+ Show Spoiler + Ah yeah i failed at reading comprehension at that question, however: If you asked one of the daughters that, and she answers: "no" then you dont know which one it is, because the middle daughter might say that aswell.
+ Show Spoiler +middle daughter would say 'yes' regardless of whether she's lying or not unless you're saying that she randomly decides to say yes/no, in which case you can't answer this question
+ Show Spoiler +Yeah she says it randomly, and yes it can be solved. hint: + Show Spoiler +It is not a 'question in a question'.
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On December 06 2010 07:06 infinitestory wrote:Show nested quote +On December 06 2010 07:00 Slakkoo wrote: t3tsubo, please make an answer to Three hats before I go mad! + Show Spoiler + A has no idea what color his hat is. But the only way he would know is if B and C were both wearing white hats. So B and C are not both wearing white hats. Armed with this knowledge, B looks at C's hat. If he saw C had a white hat, B would know he had a black hat, since B and C are not both wearing white hats. Since B doesn't know the color of his hat either, C determines that he must be wearing a black hat.
Cheers!
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On December 06 2010 07:00 Slakkoo wrote: t3tsubo, please make an answer to Three hats before I go mad!
My answer, it is a pretty simple one: + Show Spoiler + * If A could see that B and C both had white hats (thus taking the only 2 white available) he would know that he had a black and say 'yes' when asked -> We know that B and C has at least 1 black hat (either one black and one white, or two black ones)
* B know that A didn't say 'yes' that means he knows that both he and C can not be wearing white hats. If he sees C having a white hat he knows that he himself must have a black one and would say answer 'yes' -> but he says 'no' as well and that give us that C must have a black one or B would have said 'yes'.
C answers that yes, now he knows he has a black one.
edit: damnit, not fast enough
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On December 06 2010 06:22 DumEN wrote:I really like this one: Three Princesses+ Show Spoiler +You are a noble knight, who have just slain a vicious dragon. To reward you, the king will let you marry one of his three daughters. The daughters all look the same, and it is impossible to know them apart, unless you ask them. However, their personalities differ, a lot:
The youngest daughter always lie. The middle daughter lie half the time. The oldest daugters never lies.
After some concidering, you decide that it would be OK to live with either the youngest, or the eldest, because at least you know what they think.
When the time comes to choose, the king only allows you to ask one(1) "yes/no"-question to any one of the three daughters, and you don't know who is who.
What do you ask, to make sure you can make a choice, confident you will not choose the middle daughter?
+ Show Spoiler +No questions are necessary at first. you simply pick a princess at random and shoot her in the foot. If she says “ow” over and over, she’s the truthful one, if she says “This doesn’t hurt” over and over, she’s the liar, and if she alternates between the two answers, she’s the random one. if you choose the random one you simply choose to marry one of the other two and then proceed to ask your yes/no question which is “are you a princess?” if she says yes, she’s the honest one, and if she says no, she’s the liar, and this, my friends, is how it is done.
+ Show Spoiler +
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