Author Topic: Riddles!  (Read 46324 times)

Offline YitzyS

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Re: Riddles!
« Reply #315 on: August 30, 2019, 09:32:54 AM »
Here's a solution:
You go through the Door between the letters H & M.

The logic - since the sequence is the clue, and the letters appear on the wall sequentially, it would make sense that the person who painted them on the walls entered through the non-booby trapped door and began painting. When they completed the task with "M", they walked out of the room from the door they started with.
That is the most sensible answer I've heard all day. Still not absolutely positive that it's the expected one though.

Offline Yonah

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Re: Riddles!
« Reply #316 on: August 30, 2019, 03:40:04 PM »
The three fastest horses:

A horse farmer takes you to his track and asks you to find the 3 fastest horses out of the 25 he owns. There are three parameters/givens to this test:

- Regardless of how many times you run them, the horses are relatively consistent - meaning if horse "A" is faster than horse "B" in one race, he is ALWAYS faster than Horse "B".
- You can't use a stop watch
- You can only race five horses at a time on the track.

What is the minimum number of races you need to run to find horses 1,2, and 3, and how do you set them up?

Offline yitzgar

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Re: Riddles!
« Reply #317 on: August 30, 2019, 04:14:06 PM »
The three fastest horses:

A horse farmer takes you to his track and asks you to find the 3 fastest horses out of the 25 he owns. There are three parameters/givens to this test:

- Regardless of how many times you run them, the horses are relatively consistent - meaning if horse "A" is faster than horse "B" in one race, he is ALWAYS faster than Horse "B".
- You can't use a stop watch
- You can only race five horses at a time on the track.

What is the minimum number of races you need to run to find horses 1,2, and 3, and how do you set them up?
6?

Offline etech0

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Re: Riddles!
« Reply #318 on: August 30, 2019, 04:17:11 PM »
6?
That's what I thought at first but that really just gets you the one fastest one (I think). Pretty sure I can do it in 9, not sure if there is a faster way.
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Offline yitzgar

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Re: Riddles!
« Reply #319 on: August 30, 2019, 04:22:36 PM »
That's what I thought at first but that really just gets you the one fastest one (I think). Pretty sure I can do it in 9, not sure if there is a faster way.
Ya I see what you are saying

Offline aygart

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Re: Riddles!
« Reply #320 on: August 30, 2019, 04:24:56 PM »
It depends on which ones are fastest. I can see getting it in between 6 and 8.
Feelings don't care about your facts

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Re: Riddles!
« Reply #321 on: August 30, 2019, 04:26:03 PM »
That's what I thought at first but that really just gets you the one fastest one (I think). Pretty sure I can do it in 9, not sure if there is a faster way.
Why only the fastest? After you get the 5 winners you make the 6th race and get who's in first second and third. No?


Offline aygart

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Re: Riddles!
« Reply #322 on: August 30, 2019, 04:26:52 PM »
Why only the fastest? After you get the 5 winners you make the 6th race and get who's in first second and third. No?


What if the second of the first race is faster than the first of the second race?
Feelings don't care about your facts

Offline etech0

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Re: Riddles!
« Reply #323 on: August 30, 2019, 04:28:34 PM »
What if the second of the first race is faster than the first of the second race?
+1
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Offline aygart

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Re: Riddles!
« Reply #324 on: August 30, 2019, 04:29:32 PM »
Or for that matter what if all 5 of the first race are the fastest of all?
Feelings don't care about your facts

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Re: Riddles!
« Reply #325 on: August 30, 2019, 04:29:43 PM »
What if the second of the first race is faster than the first of the second race?
Oh I see

Offline whYME

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Re: Riddles!
« Reply #326 on: August 30, 2019, 04:49:19 PM »
Here's a solution:
You go through the Door between the letters H & M.

The logic - since the sequence is the clue, and the letters appear on the wall sequentially, it would make sense that the person who painted them on the walls entered through the non-booby trapped door and began painting. When they completed the task with "M", they walked out of the room from the door they started with.

That was kind of my first thought when I saw this but I feel like it's too simplistic

Offline Yonah

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Re: Riddles!
« Reply #327 on: August 30, 2019, 05:01:25 PM »
The three fastest horses:

A horse farmer takes you to his track and asks you to find the 3 fastest horses out of the 25 he owns. There are three parameters/givens to this test:

- Regardless of how many times you run them, the horses are relatively consistent - meaning if horse "A" is faster than horse "B" in one race, he is ALWAYS faster than Horse "B".
- You can't use a stop watch
- You can only race five horses at a time on the track.

What is the minimum number of races you need to run to find horses 1,2, and 3, and how do you set them up?

@yitzgar @etech0 @aygart @Definitions you guys are on the right track.

The answer is 7 - and here is why:
You group them in groups of 5, and Run 5 different races - let's call the groups A,B,C,D,E; and within their groups as 1-5; So A1 is the fastest horse in group A and A5 is the slowest.

In the 6th race, you run all of the first place horses, let's say that the Order of the 6th race is A1,B1,C1,D1,E1

After race 6, given that they're all relatively consistent speed was, you know the following:

- A1 is the fastest horse
- All of the horses in Groups D and E are out
- A2 and A3 might be the 2nd and 3rd fastest, but A4 and A5 are out
- B1 and B2 might be the 2nd and 3rd fastest, but B3,4,5 are out (since B1 can be 2nd at best, B3 can be 4th at best)
- C1 could be third at best - C2-5 are out.

So 2nd and 3rd place have 5 remaining horses:
A2, A3, B1,B2,C1

And they race to determine the places.

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Re: Riddles!
« Reply #328 on: August 30, 2019, 05:07:18 PM »
That was kind of my first thought when I saw this but I feel like it's too simplistic
Also why start from H
@yitzgar @etech0 @aygart @Definitions you guys are on the right track.

The answer is 7 - and here is why:
You group them in groups of 5, and Run 5 different races - let's call the groups A,B,C,D,E; and within their groups as 1-5; So A1 is the fastest horse in group A and A5 is the slowest.

In the 6th race, you run all of the first place horses, let's say that the Order of the 6th race is A1,B1,C1,D1,E1

After race 6, given that they're all relatively consistent speed was, you know the following:

- A1 is the fastest horse
- All of the horses in Groups D and E are out
- A2 and A3 might be the 2nd and 3rd fastest, but A4 and A5 are out
- B1 and B2 might be the 2nd and 3rd fastest, but B3,4,5 are out (since B1 can be 2nd at best, B3 can be 4th at best)
- C1 could be third at best - C2-5 are out.

So 2nd and 3rd place have 5 remaining horses:
A2, A3, B1,B2,C1

And they race to determine the places.
I was just in middle of writing it down :) this is what I narrowed it down to so far ( 8 ).



I should've remembered that I only have to find the top three. Oh well. It's a good riddle

Offline etech0

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Re: Riddles!
« Reply #329 on: August 30, 2019, 05:43:22 PM »
@yitzgar @etech0 @aygart @Definitions you guys are on the right track.

The answer is 7 - and here is why:
You group them in groups of 5, and Run 5 different races - let's call the groups A,B,C,D,E; and within their groups as 1-5; So A1 is the fastest horse in group A and A5 is the slowest.

In the 6th race, you run all of the first place horses, let's say that the Order of the 6th race is A1,B1,C1,D1,E1

After race 6, given that they're all relatively consistent speed was, you know the following:

- A1 is the fastest horse
- All of the horses in Groups D and E are out
- A2 and A3 might be the 2nd and 3rd fastest, but A4 and A5 are out
- B1 and B2 might be the 2nd and 3rd fastest, but B3,4,5 are out (since B1 can be 2nd at best, B3 can be 4th at best)
- C1 could be third at best - C2-5 are out.

So 2nd and 3rd place have 5 remaining horses:
A2, A3, B1,B2,C1

And they race to determine the places.
Nice!
Workflowy. You won't know what you're missing until you try it.