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 Posted: Thu May 31, 2007 4:39 pm
ANYONE WHO LOVES SCIENCE AND MATHEMATICS LOVES RIDDLES TOO. IF YOU HAVE ANY REALLY REALLY GOOD RIDDLES OR JUST GOOD RIDDLES, PLEASE POST THEM BECAUSE MINE ARE ALL TOO EASY. POST THEM, SOLVE THEM, WHATEVER YOU WANT BUT PLEASE POST SOME AND WRITE THE ANSWERS IN WHITE! K . WHITE!
HAVE FUN!
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Posted: Wed Aug 01, 2007 9:52 pm
Here's a couple from a book. Kinda easy but...
1. Weight in my belly Trees on my back Nails in my ribs Feet I do lack
2. The part of the bird that is not in the sky which can swim in the ocean and always stay dry
3. What does man love more than life
Fear more than death or mortal strife
What the poor have, the rich require
and what contented men desire
what misers spend and spendthrifts save
and all men carry to the grave
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Posted: Wed Aug 01, 2007 9:56 pm
Nobody's solved my riddle yet (my maths professor told us this one) So I'll post it here Quote: Okay, so there are ten people on a boat out at sea, when pirates come along and take them captive. Now the pirates aren't your ordinary pirates who just kill everyone, they like to give everyone a chance to live. So they line everyone up in such a way that each captive can only see the captive in front of them. The pirates than place either a black or a white hat on each captives head. They have no idea what the colour of the hat on their head is, only the colour of the person standing in front of them. Then, starting from the captive at the back of the line, they ask each captive to guess the colour of their hat. If they guess right they are allowed to live, if they get it wrong they have to walk the plank. The question is what can the captives do to guarantee that at least 9 out of ten of them would survive?
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Posted: Wed Aug 01, 2007 9:58 pm
Quote: 3. What does man love more than life Fear more than death or mortal strife What the poor have, the rich require and what contented men desire what misers spend and spendthrifts save and all men carry to the grave Answer in white. Nothing
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Posted: Wed Aug 01, 2007 10:00 pm
No, I don't think "in white" is correct. neutral
*Iggy is in a silly mood*
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Posted: Wed Aug 01, 2007 11:16 pm
Riddle stolen from a friend:
You have n 3-state switches, and a 3-state light bulb (say, white, red, and off). The switches are rigged up so that changing the states of all of the switches will change the state of the light bulb.
Show that one switch controls the light bulb regardless of the state of the other switch.
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Posted: Thu Aug 02, 2007 10:56 pm
A Lost Iguana No, I don't think "in white" is correct. neutral *Iggy is in a silly mood* Yeah I can tell.
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Posted: Fri Aug 03, 2007 4:11 pm
I have an inability to take myself seriously most times.
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Posted: Sat Aug 11, 2007 1:19 pm
(Taken from Cartalk which in turn purportedly took it from some mathematician circles)
A prison warden decides to give the 32 inmates a chance to earn their release. The prisoners are gathered together and told that they may formulate a strategy for the soon to be revealed scenario, but aftwards they will each be locked in solitary confinement with no communication between themselves possible.
At random intervals, a randomly chosen prisoner will be taken from their cell and taken to an enclosed booth. Within this booth are two switches. The prisoner MUST flip one of the two switches. The prisoner is then returned to their cell. At any point in time a prisoner may say, "we've all been in the room", and if the prisoner is correct they are all released-- if incorrect then they are all killed. What strategy guarantees success?
The only guarantee given is that *eventually* all prisoners will be taken to the room as often as the others, but there is no telling how long this may take. The same prisoner may be taken to the room 100 times in a row (for example), before another prisoner is taken to the room. Furthermore, there is no regular time period seperating the visits. For example, an hours duration between visits to the booth may be followed by a duration of one year, or anything else at all-- it's completely random.
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Posted: Tue Aug 21, 2007 11:21 pm
Most of the posts here would be more accurately described as puzzles, not riddles. Anyway, answers in white: 1. Ship/boat
2. Shadow
3. NothingMy favorite riddle: Samuel Taylor Coleridge There is not wind enough to twirl That one red leaf, nearest of its clan, Which dances as often as dance it can.
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Posted: Fri Aug 24, 2007 6:54 am
Dewdew Nobody's solved my riddle yet (my maths professor told us this one) So I'll post it here Quote: Okay, so there are ten people on a boat out at sea, when pirates come along and take them captive. Now the pirates aren't your ordinary pirates who just kill everyone, they like to give everyone a chance to live. So they line everyone up in such a way that each captive can only see the captive in front of them. The pirates than place either a black or a white hat on each captives head. They have no idea what the colour of the hat on their head is, only the colour of the person standing in front of them. Then, starting from the captive at the back of the line, they ask each captive to guess the colour of their hat. If they guess right they are allowed to live, if they get it wrong they have to walk the plank. The question is what can the captives do to guarantee that at least 9 out of ten of them would survive? This is one I like. I'll white the answer. The person at the back of the queue, who speaks first, can tell whether there are an even or an odd number of black hats. If there is an even number, they say black, and if there is an odd number they say white. Everyone else then knows whether there are an odd or even number of black hats on the remaining nine heads. If everyone behind them, except the last person in the queue, has answered right, they know how many black hats were behind them, and they know how many are in front. With this info they know the color of their hat.
So at most one person dies.Nice puzzle, seen it before though.
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Posted: Sun Sep 02, 2007 8:51 pm
jestingrabbit Dewdew Nobody's solved my riddle yet (my maths professor told us this one) So I'll post it here Quote: Okay, so there are ten people on a boat out at sea, when pirates come along and take them captive. Now the pirates aren't your ordinary pirates who just kill everyone, they like to give everyone a chance to live. So they line everyone up in such a way that each captive can only see the captive in front of them. The pirates than place either a black or a white hat on each captives head. They have no idea what the colour of the hat on their head is, only the colour of the person standing in front of them. Then, starting from the captive at the back of the line, they ask each captive to guess the colour of their hat. If they guess right they are allowed to live, if they get it wrong they have to walk the plank. The question is what can the captives do to guarantee that at least 9 out of ten of them would survive? This is one I like. I'll white the answer. The person at the back of the queue, who speaks first, can tell whether there are an even or an odd number of black hats. If there is an even number, they say black, and if there is an odd number they say white. Everyone else then knows whether there are an odd or even number of black hats on the remaining nine heads. If everyone behind them, except the last person in the queue, has answered right, they know how many black hats were behind them, and they know how many are in front. With this info they know the color of their hat.
So at most one person dies.Nice puzzle, seen it before though. Your answer does work. My answer was different, though I was never told the answer I figured one out myself. My answer is based one the fact that there are actually four different statements each person can make.
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Posted: Sun Sep 02, 2007 11:43 pm
Dewdew jestingrabbit Dewdew Nobody's solved my riddle yet (my maths professor told us this one) So I'll post it here Quote: Okay, so there are ten people on a boat out at sea, when pirates come along and take them captive. Now the pirates aren't your ordinary pirates who just kill everyone, they like to give everyone a chance to live. So they line everyone up in such a way that each captive can only see the captive in front of them. The pirates than place either a black or a white hat on each captives head. They have no idea what the colour of the hat on their head is, only the colour of the person standing in front of them. Then, starting from the captive at the back of the line, they ask each captive to guess the colour of their hat. If they guess right they are allowed to live, if they get it wrong they have to walk the plank. The question is what can the captives do to guarantee that at least 9 out of ten of them would survive? This is one I like. I'll white the answer. The person at the back of the queue, who speaks first, can tell whether there are an even or an odd number of black hats. If there is an even number, they say black, and if there is an odd number they say white. Everyone else then knows whether there are an odd or even number of black hats on the remaining nine heads. If everyone behind them, except the last person in the queue, has answered right, they know how many black hats were behind them, and they know how many are in front. With this info they know the color of their hat.
So at most one person dies.Nice puzzle, seen it before though. Your answer does work. My answer was different, though I was never told the answer I figured one out myself. My answer is based one the fact that there are actually four different statements each person can make. I would be interested to hear your answer.
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Posted: Mon Sep 03, 2007 8:51 pm
The answer based upon noting odd/even number of hats does *not* work. The original puzzle stated: Quote: So they line everyone up in such a way that each captive can only see the captive in front of them. This clearly states the captive can only see one hat, that of the person directly in front of him/her. Assuming the captives had time to discuss a plan before this happened, there is a simple solution. When guessing the color of one's hat, all the captive can make some signal of the next person's hat. An example would be to say, "Uh" before you guess if the next hat is black, and nothing if it is white.
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Posted: Fri Sep 07, 2007 2:50 am
zz1000zz The answer based upon noting odd/even number of hats does *not* work. The original puzzle stated: Quote: So they line everyone up in such a way that each captive can only see the captive in front of them. This clearly states the captive can only see one hat, that of the person directly in front of him/her. Assuming the captives had time to discuss a plan before this happened, there is a simple solution. When guessing the color of one's hat, all the captive can make some signal of the next person's hat. An example would be to say, "Uh" before you guess if the next hat is black, and nothing if it is white. Right you are. I do think the version where each captive can see everyone in front of them is more interesting though.
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