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My eight favorite riddles (v. difficult) - Page 6

Forum Index > General Forum
Post a Reply
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StylishVODs
Profile Joined December 2005
Sweden5331 Posts
September 19 2006 06:00 GMT
#101
Hot Bid.. Im right aint I? its 25% chanse to get head head or Tail tail and its 50% chanse to get tail head or head tail..

Wich means its easier to get 2 different sides faced up than for example head head.
But if u say, the chanse of getting head+head OR tails+tails, then u sum up those 25% and u get 50% aswell...
According to Reach, he is the fastest learner he has ever seen. He start bw only like 2/3 years ago. Infact, his bw history knowledge is so limited, he didn't even know what the map Guillotine was.
Rekrul
Profile Blog Joined November 2002
Korea (South)17174 Posts
September 19 2006 06:14 GMT
#102
On September 19 2006 12:57 LTT wrote:
#2

+ Show Spoiler +
We want a set of questions where there are three unique answers that are independant of the watches settings.

Consider the questions: Is the Car Behind door 1 or 2? and Is the Car Behind door 2 or 3?

C = car, G = goat. Doors are presented in order from 1 to 3
Case:
CGG Yes, No
GCG Yes, Yes
GGC No, Yes

Now, for our questions to ask the watch, use the following:
Is the answer to the question "Is the car behind door 1 or 2?" blue?
Is the answer to the question "Is the car behind door 2 or 3?" blue?

Blue = Yes, Yellow = No

cgg Blue, Yellow
gcg Blue, Blue
ggc Yellow, Blue

Blue = No, Yellow = Yes

cgg Blue, Yellow
gcg Yellow, Yellow
ggc Yellow, Blue

We get the same results irregardless of the truth values of the watch. If Blue, Yellow pick door 1, If the answers are the same pick door 2, If Yellow, Blue pick door 3.


No. This still leaves you with a 50/50 cause you won't know if it's door one or three considering the fact that you don't know which light means no or yes.
why so 진지해?
GrandInquisitor *
Profile Blog Joined May 2005
New York City13113 Posts
September 19 2006 06:17 GMT
#103
Wow, all the riddles have been solved! =D

Mad props to those who got #2 - the hardest part about it is that the solution:

+ Show Spoiler +
Would you flash yellow if i asked you if there was a car behind door 1?
Would you flash yellow if i asked you if there was a car behind door 2?

I picked this cause it was best phrasing


isn't a EUREKA solution at all
What fun is it being cool if you can’t wear a sombrero?
LTT
Profile Blog Joined March 2003
Shakuras1095 Posts
September 19 2006 06:19 GMT
#104
On September 19 2006 15:14 Rekrul wrote:
Show nested quote +
On September 19 2006 12:57 LTT wrote:
#2

+ Show Spoiler +
We want a set of questions where there are three unique answers that are independant of the watches settings.

Consider the questions: Is the Car Behind door 1 or 2? and Is the Car Behind door 2 or 3?

C = car, G = goat. Doors are presented in order from 1 to 3
Case:
CGG Yes, No
GCG Yes, Yes
GGC No, Yes

Now, for our questions to ask the watch, use the following:
Is the answer to the question "Is the car behind door 1 or 2?" blue?
Is the answer to the question "Is the car behind door 2 or 3?" blue?

Blue = Yes, Yellow = No

cgg Blue, Yellow
gcg Blue, Blue
ggc Yellow, Blue

Blue = No, Yellow = Yes

cgg Blue, Yellow
gcg Yellow, Yellow
ggc Yellow, Blue

We get the same results irregardless of the truth values of the watch. If Blue, Yellow pick door 1, If the answers are the same pick door 2, If Yellow, Blue pick door 3.


No. This still leaves you with a 50/50 cause you won't know if it's door one or three considering the fact that you don't know which light means no or yes.


Rek, look at the cases. You don't need to know which means yes or no because the cases are the exact same for each situation. The only thing that is different is the blue, blue or yellow, yellow outcome, but we just check to see if the color is the same. The actual color doesn;t matter in that case.
BlackJack
Profile Blog Joined June 2003
United States10574 Posts
September 19 2006 06:23 GMT
#105
On September 19 2006 12:57 LTT wrote:
#2

+ Show Spoiler +
We want a set of questions where there are three unique answers that are independant of the watches settings.

Consider the questions: Is the Car Behind door 1 or 2? and Is the Car Behind door 2 or 3?

C = car, G = goat. Doors are presented in order from 1 to 3
Case:
CGG Yes, No
GCG Yes, Yes
GGC No, Yes

Now, for our questions to ask the watch, use the following:
Is the answer to the question "Is the car behind door 1 or 2?" blue?
Is the answer to the question "Is the car behind door 2 or 3?" blue?

Blue = Yes, Yellow = No

cgg Blue, Yellow
gcg Blue, Blue
ggc Yellow, Blue

Blue = No, Yellow = Yes

cgg Blue, Yellow
gcg Yellow, Yellow
ggc Yellow, Blue

We get the same results irregardless of the truth values of the watch. If Blue, Yellow pick door 1, If the answers are the same pick door 2, If Yellow, Blue pick door 3.


If you ask it "Is the answer to this question blue?" And blue = no, how can it respond with a blue light? It's contradictory, no?
LTT
Profile Blog Joined March 2003
Shakuras1095 Posts
Last Edited: 2006-09-19 06:28:23
September 19 2006 06:27 GMT
#106
On September 19 2006 15:23 BlackJack wrote:
Show nested quote +
On September 19 2006 12:57 LTT wrote:
#2

+ Show Spoiler +
We want a set of questions where there are three unique answers that are independant of the watches settings.

Consider the questions: Is the Car Behind door 1 or 2? and Is the Car Behind door 2 or 3?

C = car, G = goat. Doors are presented in order from 1 to 3
Case:
CGG Yes, No
GCG Yes, Yes
GGC No, Yes

Now, for our questions to ask the watch, use the following:
Is the answer to the question "Is the car behind door 1 or 2?" blue?
Is the answer to the question "Is the car behind door 2 or 3?" blue?

Blue = Yes, Yellow = No

cgg Blue, Yellow
gcg Blue, Blue
ggc Yellow, Blue

Blue = No, Yellow = Yes

cgg Blue, Yellow
gcg Yellow, Yellow
ggc Yellow, Blue

We get the same results irregardless of the truth values of the watch. If Blue, Yellow pick door 1, If the answers are the same pick door 2, If Yellow, Blue pick door 3.


If you ask it "Is the answer to this question blue?" And blue = no, how can it respond with a blue light? It's contradictory, no?


It isn't. You just have to start from the inside and work your way out.

Take the CGG case. Is the car behind door number 1 or 2? Yes. What is yes? Yellow. Is the answer blue? No. What is no? Blue. Done.

Edit: To clarify, it isn't asking "Is the answer to this question blue?" It's asking "Is the answer to this other question blue?"
BlackJack
Profile Blog Joined June 2003
United States10574 Posts
September 19 2006 06:30 GMT
#107
Blue = no.

You ask it "Is the answer blue?"

It flashes a blue light.

That's not a paradox to you? Telling you the answer is not a blue light by giving you a blue light?
LTT
Profile Blog Joined March 2003
Shakuras1095 Posts
September 19 2006 06:32 GMT
#108
No, because the answer to the other question is yellow. You need to think of the question being referenced independantly of the referencial question.
Sonic300
Profile Joined November 2003
89 Posts
September 19 2006 06:35 GMT
#109
anyone solved 8?
i think i've got a solution...
BlackJack
Profile Blog Joined June 2003
United States10574 Posts
September 19 2006 06:36 GMT
#110
ah.. ok i see now
Chill
Profile Blog Joined January 2005
Calgary26003 Posts
September 19 2006 06:36 GMT
#111
On September 19 2006 14:18 rpf289 wrote:
Show nested quote +

4. A man is in a rowing boat floating on a lake, holding a brick in his hands. He throws the brick over the side of the boat. The brick sinks quickly. Does the water level in the lake go up or down? Explain.

+ Show Spoiler +
The water level of the lake does not go up or down. The brick going into the water does not displace any more water than it did when being supported by the canoe.


This has been solved like 9 on pages 2-4. Your solution is wrong.

I'm also discouraged by the people who can't do simple probabilities that you learn in grade 10.
You flip two coins, here are the probable outcomes:
(HH, HT, TH, TT).

So for that guy who keeps saying that it's 25% same and 50% other (which doesn't even make sense in itself because that doesn't sume to 1), please stop.
Moderator
Sonic300
Profile Joined November 2003
89 Posts
September 19 2006 06:39 GMT
#112
how can i do a fucking spoiler? 8[
lawl mart
Profile Joined April 2006
United States1289 Posts
September 19 2006 06:48 GMT
#113
+ Show Spoiler +
goatse!
14cc... whats next? women voting?
Sonic300
Profile Joined November 2003
89 Posts
September 19 2006 06:59 GMT
#114
got it
okay concerning riddle 8

+ Show Spoiler +

just eat the pills out of the boxes or whatever
ignore the three you have in your hand and put them somewhere else
so after a certain amount of days, in your boxes will be 1 pill left
either a or be no matter
that makes 4 pills you have left
cut each pill excaktly into a half
eat 1 half of each pill
do the same thing the next day
voila
-_-
Profile Blog Joined November 2003
United States7081 Posts
Last Edited: 2006-09-19 07:41:59
September 19 2006 07:38 GMT
#115
On September 19 2006 11:44 Dametri wrote:
Show nested quote +
On September 19 2006 11:35 -_- wrote:
I'VE SOLVED 2 ANSWER IN SPOILER AND AS MUCH EXPLANATION AS I CAN FIT IN 10 MINS

+ Show Spoiler +

Q1 Are there exactly 2 goats in 1/2
Q2 Is there exactly 1 goat in 2/3

If you get a Blue Blue lights (or yellow yellow irrelevant) they can either mean yes or no. If they mean Yes Yes then the car must be 3. If it's a no no then there must be 1 or 0 goats in 1/2 and 2 or 0 goats in 2/3. If 0 in 1/2 there must be 2 in 2/3 so there must be 1 in 1/2. Impossible. If there's 1 goat in 1/2 it must be either goat 1 or 2. Regardless of the goat there then must be 1 in 2/3.

SO THERE CAN'T BE NO NO IT MUST BE YES YES

Now for BY or YB (doesn't matter)

If it's a yes to 1 and a no to 2 there must be 2 in 1/2. So there must be a 2 in 2/3 SO THERE CAN'T BE A YES NO. It must be no yes.

If it's a no to 1 then there must be 0 or 1 goats in 1/2. If it's 0, there's 2 in 2/3 and thus 1 in 1/2. THERE CAN'T BE 0 thusly. If there's 1 it must be either 1/2. If it's 2, then 3 must be the other goat, and we have 2 and 3 being goats thus 2 goats in 2/3 and impossible. If it's a 1, then the other one can't be 2 so the other goat must be 3 and thus car is 2


A bit might be off because of fast typing in thinking but that's it. I'm so proud!


+ Show Spoiler +
sorry.. there can be a no no (car in 1, goat in 2, goat in 3 - 1 goat in 1/2, 2 goats in 2/3)


Nope. I am very sure of my solution. (heh not really but you didn't prove me wrong)

If there is one goat in 1/2 and 2 in 2/3 then the answer to one is no and the answer to 2 is no. The no no situation I described. So there there must be 1/2 goat in one or 0 goats in 1/2. If there's 0 goats, then then there must be 2 in 2/3 which means there's 1 in 1/2 and thus impossible. If there's 1, it can be either 1 or 2. If it's 1, HERE'S WHERE I LOST YOU then there CAN ONLY BE 1 goat in 2/3. IF there is only one goat in 2/3 THEN THE ANSWER TO SECOND QUESTION MUST BE YES. So the whole thing is impossible. There is no NO NO (wrong wrong)

-_-
Profile Blog Joined November 2003
United States7081 Posts
September 19 2006 07:39 GMT
#116
Basically I'm saying you cannot have it flash blue or yellow twice and be wrong twice.
AcrossFiveJulys
Profile Blog Joined September 2005
United States3612 Posts
September 19 2006 08:03 GMT
#117
wtf hotbid, your riddle is messed up lol... maybe you didn't think about the answer, but it really will make no difference what side you pick, no matter what conditions you consider, because they will affect each random possiblity equaly in probability.
drift0ut
Profile Blog Joined June 2004
United Kingdom691 Posts
Last Edited: 2006-09-19 08:19:26
September 19 2006 08:17 GMT
#118
dear -_-,
i think your's is the nicest answer but wrong:

car in door 1

Q1 Are there exactly 2 goats in 1/2 : NO
Q2 Is there exactly 1 goat in 2/3 : NO
say blue blue

car in door 2

Q1 Are there exactly 2 goats in 1/2 : NO
Q2 Is there exactly 1 goat in 2/3 : YES
say blue yellow

car in door 3

Q1 Are there exactly 2 goats in 1/2 : YES
Q2 Is there exactly 1 goat in 2/3 : YES
say blue blue

so it can't tell the diffrence between 1 and 3

Even if i'm wrong you've only got 2 light combos which can at most identify 2 doors, what if it's behind the 3rd?
-_-
Profile Blog Joined November 2003
United States7081 Posts
September 19 2006 08:42 GMT
#119
My answer is by far the nicest, but alas I have seen my folly. I Admit... DEFEAT.
azndsh
Profile Blog Joined August 2006
United States4447 Posts
September 19 2006 09:00 GMT
#120
hey, post the answers on the first post because certain people have trouble understanding which one is correct...
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