instruction stringlengths 15 30k |
|---|
<sup>Someone told me that I should put a link to [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)... whatever that is, sure. </sup>
---
PSE, I need your help. I just got back from the worst escape room experience I've ever had in my life. Not only was the ... |
What is the largest number such that ()16 is a 5-digit long palindrome, where each digit appears at most twice? A palindrome is a number that reads the same forward and it does backward, such as 737 or 24542. |
What is the largest number $ x $ such that $ x_{16}, $ i.e. $ x $ in base 16, is a 5-digit long palindrome? A palindrome is a number that reads the same forward as it does backward, such as 737 or 24542, where each digit appears at most twice. |
What is the largest number $ x $ such that $ x_{16}, $ i.e. $ x $ in base 16, is a 5-digit long palindrome, where each digit appears at most twice? A palindrome is a number that reads the same forward as it does backward, such as 737 or 24542. |
This seems pretty simple, but is the answer
>! 1043951?
This number in base 16 is
>! FEDEF, which is the largest five-digit palindrome in base 16 where each digit appears at most twice.
|
The mathematician Stan Wagon built a tricycle with square wheels that can ride smoothly on a carefully crafted curved surface:
[![enter image description here][1]][1]
Now I have some puzzles for you:
1. Is there a surface that allows one to ride on triangular wheels?
2. Which wheel can ride smoothly on the fo... |
The mathematician Stan Wagon built a tricycle with square wheels that can ride smoothly on a carefully crafted curved surface:
[![enter image description here][1]][1]
Now I have some puzzles for you:
1. Is there a surface that allows one to ride on triangular wheels?
2. Which wheel can ride smoothly on the fo... |
Let's construct a 10x10 grid. 0n the 100 squares you are allowed to place 7 bases (the red dots in the diagram below) in any square on the grid. Then you fill the grid with skinny trominoes. The trominoes have to cover all the squares except the squares which contain a base. Next, construct a continuous trail (the red ... |
There is a castle with rooms arranged in a 4x4 square grid. The princess living in the castle sleeps in a different room each night, but always one adjacent to the one in which she slept in the previous night. She is free to choose any room in which to sleep on the first night. Three knights would like to find the prin... |
It’s Black to move. What must Black do in order to help White castle queenside in just 11 moves?
[![enter image description here][1]][1]
[1]: https://i.stack.imgur.com/djdK4.png |
You are in a room, with 6 people. 2 of them are liars. The room has a code pad. The people say:
| People | What they say |
|:----: |:------:|
| Keith | The first and last digit are the same number and are not used anywhere else in the code. The numbers in question are prime numbers. |
| Sabrina | The code does n... |
You are in a room, with 6 people. 2 of them are liars. The room has a code pad. The people say:
| People | What they say |
|:------:|:------:|
| Keith | The first and last digit are the same number and are not used anywhere else in the code. The numbers in question are prime numbers. |
| Sabrina | The code doe... |
Can anyone tell me what the name of this twisty puzzle is and/or where to buy one? |
This is in the spirit of the [What is a Word/Phrase™][1] series started by [JLee][2] with a special brand of [Phrase™][3] and [Word™][4] puzzles.
___
All the Salon Words below have a feature in common with them that none of the Not Salon Words have. Can you figure out what that special feature is?
| Salon Words ... |
What is a Salon Word™? |
*<sup>Inspired by [Avi's Vowelburger™ Riddle](https://puzzling.stackexchange.com/q/92931/18418). Hope you enjoyed our previous Chef's Specials: [#1](https://puzzling.stackexchange.com/q/94962/18418) and [#2](https://puzzling.stackexchange.com/q/95059/18418)</sup>*
Our chef went way ahead to prepare the biggest Vowel... |
What is the 6-letter word that associates with this rebus?
[![enter image description here][1]][1]
Helpness Meter 1:
>! Figure out what the number means first.
Helpness Meter 2:
>! [![enter image description here][2]][2]
[1]: https://i.stack.imgur.com/RbX67.png
[2]: https://i.stack.imgur.com/VXwpP.... |
Suppose that you take a pen and mark five points on a ball.
I claim that no matter where you draw those points, I can always slice the ball into two equal halves (too equal hemispheres) such that one of the halves contain exactly four of those points. Is my claim true? |
I got sent this from a year ago, and I am still thinking what was the secret number that they hid a secret from, so here are the pictures.
The first one was a car, and a random equation.
[![enter image description here][1]][1]
The next one looks like a moon from Mars, with a random red circle. The person that ... |
Suppose that you take a pen and mark five points on a ball.
I claim that no matter where you draw those points, I can always slice the ball into two equal halves (too equal and closed hemispheres) such that one of the halves contain exactly four of those points. Is my claim true? |
Suppose that you take a pen and mark five points on a ball.
I claim that no matter where you draw those points, I can always slice the ball into two equal halves (two equal and closed hemispheres) such that one of the halves contain exactly four of those points. Is my claim true? |
Who is the only pre-teen that has traveled to outer space? |
Is it perhaps
>! Jack Lousma?
Reasoning
>! Jack was an astronaut born in **29** february 1936 and traveled to outer space in April 1966, which would mean he had 7 birthdays, making him a "pre-teen". |
What is a Fun Puzzle?
<sub>I was curious to learn what makes a puzzle Fun so that I could devote my time to only working on Fun Puzzles. With that goal in mind, I set out to make a list of Fun and Not Fun puzzles. I knew this would be a contentious topic with many opinions, so I took an informal poll and below are t... |
What is a Fun Puzzle? |
What is a Fun Puzzle?
<sub>I was curious to learn what makes a puzzle Fun so that I could devote my time to only working on Fun Puzzles. With that goal in mind, I set out to make a list of Fun and Not Fun puzzles. I knew this would be a contentious topic with many opinions, so I took an informal poll and below are t... |
Is it perhaps
>! Jack Lousma?
Reasoning
>! Jack was an astronaut born in **29** February 1936 and traveled to outer space in April 1966, which would mean he had 7 birthdays, making him a "pre-teen". |
Who is the only pre-teen that has traveled to outer space? Sort of a trick question. But also not quite a trick question. This is a **person**, not a dog or chimpanzee or other animal. |
Partial answer:
>! The equation in the first image can be broken out:
>! <br/>
>! µ = micro (International System of Units/SI prefix)
>! M = mega (International System of Units/SI prefix)
>! µM + S = **_MicroMegaS_**
>! The first image and second image work together as stated:
>! <br/>
>! The images a... |
This is in the spirit of the [What is a Word/Phrase™][1] series started by [JLee][2] with a special brand of [Phrase™][3] and [Word™][4] puzzles.
___
All the Salon Words below have a feature in common with them that none of the Not Salon Words have. Can you figure out what that special feature is?
| Salon Words ... |
**Do you have what it takes to compete in the famous Vega Classic?**
Looking for skilled navigators. Apply below.
You have a craft that is capable of 10m/s$^2$ acceleration in any direction, and we're looking for the fasted time from Vega Starship 1 to Vega Starship 2 around the beacon.
[![Vega Classic][1]][1]... |
>! The equation in the first image can be broken out:
>! <br/>
>! µ = micro (International System of Units/SI prefix)
>! M = mega (International System of Units/SI prefix)
>! µM + S = **_MicroMegaS_**
>! The first image and second image work together as stated:
>! <br/>
>! The images are a speeding C... |
<sup>An entry in [Fortnightly Topic Challenge #50: Escape Rooms](https://puzzling.meta.stackexchange.com/questions/7172/)</sup>
---
Your head is throbbing like mad. You try to get your bearings as you look around the laboratory. Shattered beakers and spilled chemicals are everywhere. Another failed experiment. Ho... |
**Do you have what it takes to compete in the famous Vega Classic?**
Looking for skilled navigators. Apply below.
You have a craft that is capable of 10m/s$^2$ acceleration in any direction, and we're looking for the fasted time from Vega Starship 1 to Vega Starship 2 around the beacon.
[![Vega Classic][1]][1]... |
I'm a four letter word:
>With four I deliver people.
With three I trouble people.
With two I kill people.
What word am I? |
This could be a coincidence, or maybe close to the answer but not quite, but it is interesting that...
>! All of the Salon Words anagram to a word of French origin
>! - except for taipan, which anagrams to patina, which is of Italian origin, or pinata, of Spanish origin
Whereas for Not Salon Words:
>! On... |
What is the next diagram, and what is the number? |
Suppose that you take a pen and mark five points on a ball.
I claim that no matter where you draw those points, I can always slice the ball into two equal halves (two equal and closed hemispheres) such that one of the halves contain exactly four of those points. Is my claim true?
Source: [this Mathematics Educat... |
[![enter image description here][1]][1]
No tricks this time, what you see is what you get. The "around" answers are simply written in the coloured cells clockwise.
**Across**
1\. City on the British Isles, excluding the island on which Douglas is located (7)
5. Following utilisations; extremely exhausted; e... |
*Here's the first riddle I invented for Puzzling SE. Hope you'll enjoy solving it.*
This story takes place during World War II. A German spy is assigned the task to sneak overnight into a military base near London and steal secret documents of utmost importance.
The documents are kept inside 30 safes of reinforce... |
A flashlight requires 2 AA-type batteries to operate. Both these batteries need to be charged for the flashlight to work.
We happen to have 8 batteries, but 4 of them are charged while the other 4 are discharged/unusable, and they look all the same. So we would have to test them two at a time inside the flashlig... |
A flashlight requires 2 AA-type batteries to operate. Both these batteries need to be charged for the flashlight to provide light.
We happen to have 8 batteries, but 4 of them are charged while the other 4 are discharged/unusable, and they look all the same. So we would have to test them two at a time inside the... |
>! The equation in the first image can be broken out:
>! <br/>
>! µ = micro (International System of Units/SI prefix)
>! M = mega (International System of Units/SI prefix)
>! µM + S = **_MicroMegaS_**
>! The first image and second image work together as stated:
>! <br/>
>! The images are a speeding C... |
Just missing the wordplay for 7D - the completed grid looks like this:
>! [![Completed grid][1]][1]
The novelty here is that:
>! Every single clue is an '&lit', where the **whole clue is a literal definition** for the answer, but the answer is also clued by wordplay within its wording!
Clue explanations:
... |
You are blindfolded. You are handed a bag and told that there are three balls and two cubes, all of which are the same size and are equally likely to be chosen. You blindly choose one of the items from the bag. What is the probability that you choose a ball? |
The completed grid looks like this:
>! [![Completed grid][1]][1]
The novelty here is that:
>! Every single clue is an '&lit', where the **whole clue is a literal definition** for the answer, but the answer is also clued by wordplay within its wording!
Clue explanations:
>! **Across**
>! 1. City on the... |
A flashlight requires 2 AA-type batteries to operate. Both these batteries need to be charged for the flashlight to provide light.
We happen to have 8 batteries, but 4 of them are charged while the other 4 are discharged/unusable, and they look all the same. So we would have to test them two at a time inside the... |
UPDATED
This could be a coincidence, or maybe close to the answer but not quite, but it is interesting that...
>! All of the Salon Words anagram to a word of French origin
>! - except for taipan, which anagrams to patina, which is of Italian origin, or pinata, of Spanish origin
Whereas for Not Salon Words: ... |
Twenty two football players have agreed to split every week into two teams and play a match against each other. Every week, teams will be chosen differently, 11 players in each team, and they will play until each of the (231) possible pairs, A and B, of players among the 22 players will have played at least once agains... |
Twenty two football players have agreed to split every week into two teams and play a match against each other. Every week, teams will be chosen differently, 11 players in each team, and they will play until each of the (231) possible pairs, A and B, of players among the 22 players will have played at least once agains... |
<sup>An entry in [Fortnightly Topic Challenge #27: Treasure-Hunt](https://puzzling.meta.stackexchange.com/questions/5828/fortnightly-topic-challenge-27-treasure-hunt)...</sup>
<hr>
## Welcome to the PSE Assessment Exam!
**This exam is designed to assess your aptitude, knowledge and experience as a high profile m... |
Your solution is wrong in a couple of ways.
Rule #2 says it mentions all five travelers, but your chart shows only three: your Carmelita is the Zambian citizen, and your Ms. Panama has the black bag. Thus in your solution, #2 mentions only Savannah (2x, as Ms. Panama and as black bag owner), Carmelita (2x, as Carmel... |
*<sup>Inspired by [Avi's Vowelburger™ Riddle](https://puzzling.stackexchange.com/q/92931/18418)</sup>*
After making burgers with [five](https://puzzling.stackexchange.com/questions/95103/penta-decker-vowelburger-2) and [six](https://puzzling.stackexchange.com/questions/95144/six-layer-vowelburger) layers, Vowelburge... |
This is a small puzzle, I don't think it should be too hard and it doesn't have a "final answer" word or phrase.
I made this in response to a challenge that my friend who first showed me this site gave me, and I think it worked out really well!
If solving the puzzle itself isn't hard enough, then I can "pass on" ... |
**Do you have what it takes to compete in the famous Vega Classic?**
Looking for skilled navigators. Apply below.
You have a craft that is capable of 10m/s$^2$ acceleration in any direction, and we're looking for the fasted time from Vega Starship 1 to Vega Starship 2 around the beacon.
[![Vega Classic][1]][1]... |
Twenty two football players have agreed to split every week into two teams and play a match against each other. Every week, teams will be chosen differently, 11 players in each team, and they will play until each of the (231) possible pairs, A and B, of players among the 22 players will have played at least once agains... |
Interesting. I hadn't looked this up before. But it seems from [here][1] that:
>! There's a general way to convert from ground to wheel and vice versa. If you have a wheel in polar co-ordinates $(\rho,\theta)$ and ground in cartesian co-ordinates $(x,y)$, you can convert from one to the other:
>! Wheel $\rightarr... |
Interesting. I hadn't looked this up before. But it seems from [here][1] that:
>! There's a general way to convert from ground to wheel and vice versa. If you have a wheel in polar co-ordinates $(\rho,\theta)$ and ground in cartesian co-ordinates $(x,y)$, you can convert from one to the other:
>! Wheel $\rightarr... |
Interesting. I hadn't looked this up before. But it seems from [here][1] that:
>! There's a general way to convert from ground to wheel and vice versa. If you have a wheel in polar co-ordinates $(\rho,\theta)$ and ground in cartesian co-ordinates $(x,y)$, you can convert from one to the other:
>! Wheel $\rightarr... |
I recently messaged a video to my friend. It was one of those random, funny YouTube kinds. However, when I asked what their thoughts were, they sent me a cryptic text back.
"Osium, Sodium, Polonium, Tungsten, Oxygen, Rhenium, Hyrdogen."
I quickly figured it out. What was their reaction? |
I recently messaged a video to my friend. It was one of those random, funny YouTube kinds. However, when I asked what their thoughts were, they sent me a cryptic text back.
"Osmium, Sodium, Polonium, Tungsten, Oxygen, Rhenium, Hydrogen."
I quickly figured it out. What was their reaction? |
Elementary! (joke answer)
>! Os Na Po W O Re H -> O Snap! Ow or eh? This means: Goodness! Do you think that is painful (ow) or confusing (eh)? |
The 12-letter answer to this puzzle is:
>! **BRACKETOLOGY**
Why? Read on, to find out!
---
Firstly, the 12 letter strings that we have been given are all clues that have been disguised. In each case, their decryption can be described by a very specific transformation, unique to each clue. Once deciphered, eac... |
I love this puzzle! And here is a quick albeit very mathy solution:
> Let $\mathcal{B}$ be the canonical basis of $\mathbb{Z}_2^{8 \times 8}$ then there is a surjective linear map $\varphi : ~\mathbb{Z}_2^{8 \times 8} \rightarrow \mathbb{Z}_2^6$ with $\varphi(\mathcal{B}) = \mathbb{Z}_2^6$.
This is due to a stand... |
The 12-letter answer to this puzzle is:
>! **BRACKETOLOGY**
Why? Read on, to find out!
---
Firstly, the 12 letter strings that we have been given are all clues that have been disguised. In each case, their decryption can be described by a very specific transformation, unique to each clue. Once deciphered, eac... |
> If you find me in [chat](https://chat.stackexchange.com/) recently, you'll figure out the word "shchiekcemn" in this puzzle, which isn't all that important.
I got a shchiekcemn and I decided to create a roast. I gave it to a co-worker and gave her the clues. After some time, she told me I messed up.
For some co... |
I got a shchiekcemn and I decided to create a roast. I gave it to a co-worker and gave her the clues. After some time, she told me I messed up.
For some context, here are the clues:
1. Fire, Black, Destroy
2. Poison, Salmonella, Disgust
3. Gravy, Mayonnaise, Butter
So why did she claim I ruined it?
**H1**... |
A mutual friend of mine has gone crazy! They sent to my friend questions that don't make sense:
>Why is the letter V curvy????
>
>Why is Letter O carrying plates on their head?
>
>What?? Why is the number 2 bumpy???
>
>Oh MY GOD! Why is that funny number pointing right?????
>
>Why does the letter N have a ea... |
A mutual friend of mine has gone crazy! They sent to my friend questions that don't make sense:
>Why is the letter V curvy????
>
>Why is letter O carrying plates on their head?
>
>What?? Why is the number 2 bumpy???
>
>Oh MY GOD! Why is that funny number pointing right?????
>
>Why does the letter N have a ea... |
My friend William and I wanted to make a word search (number search?) of five digit numbers in a 5x5 grid, filling all spaces to form 12 clues.
To simplify things, we decided we would add a single leading zero if the value was less than one, drop any decimal symbol, and truncate at 5 digits if needed.
So, for exa... |
My daughter (pre-schhol ;) had to solve the following puzzle:
http://pasteboard.co/JUevnrK.jpg
It consists of 9 square pieces and the goal is to fit them together in such a way that all inner (ie. touching) sides show a valid, put-together pattern.
What is this type of puzzle called?
Is there a logical or eve... |
My daughter (pre-schhol ;) had to solve the following puzzle:
[![puzzle][1]][1]
It consists of 9 square pieces and the goal is to fit them together in such a way that all inner (i.e. touching) sides show a valid, put-together pattern.
What is this type of puzzle called?
Is there a logical or even programmat... |
I recently messaged a video to my friend. It was one of those random, funny YouTube kinds. However, when I asked them what their thoughts were, they sent me a cryptic text back.
>Osmium, Sodium, Polonium, Tungsten, Oxygen, Rhenium, Hydrogen.
I quickly figured it out. What was their reaction? |
<i>
I am thinking of a multiple of 5, but not of 15 - does your number divide mine?
</i>
If the number the person is thinking of is 3, it cannot divide my number since I blocked factors of 3, so we get a "no".
If 1, it will always divide my number, since 1 is a factor of every number, so we get a "yes".
If ... |
My daughter (pre-school) had to solve the following puzzle:
[![puzzle][1]][1]
It consists of 9 square pieces and the goal is to fit them together in such a way that all inner (i.e. touching) sides show a valid, put-together pattern.
What is this type of puzzle called?
Is there a logical or even programmatic... |
My friend William and I wanted to make a word search (number search?) of five digit numbers in a 5x5 grid, filling all spaces to form 12 clues.
To simplify things, we decided we would add a single leading zero if the value was less than one, drop any decimal symbol, and truncate at 5 digits if needed.
So, for exa... |
My friend William and I wanted to make a word search (number search?) of five digit numbers in a 5x5 grid, filling all spaces to form 12 clues.
To simplify things, we decided we would add a single leading zero if the value was less than one, drop any decimal symbol, and truncate at 5 digits if needed.
So, for exa... |
Yet another answer:
>! I would ask: If $N$ is your number, is $N-1$ a natural number which is also an identity element in $\mathbb{Q}$ ($\mathbb{R}$ or $\mathbb{C}$ would also work)?
Answers:
>! 3: No (2 is neither a multiplicative identity nor an additive one).
>! 2: Yes (1 is multiplicative identity).
>... |
1. *I have 4 legs on weekdays, but 2 on weekends.*
2. *I can fly, but I have no wings.*
3. *I rhyme with many, but don't rhyme with many.*
**What am I?** |
it's always a 4 letter word right?
>! It's the letter E
>! With four I dElivEr pEoplE.
>! With three I troublE pEoplE.
>! With two I kill pEoplE.
so either
>! RUNE or SIGN would fit (just trying to find a 4 letter word for 'letter')
</spoiler> |
Solving by machine (this is overkill but fun, and as I am on a Prolog refresher...)
The code can also be found [at github](https://github.com/dtonhofer/prolog_notes/blob/master/prolog_exercises/puzzles/who_is_the_hacker.pl)
Run it on your machine if you have a Prolog or online in [SWISH which is based on SWI-Prol... |
Solving by machine (this is overkill but fun, and as I am on a Prolog refresher...)
The code can also be found [at github](https://github.com/dtonhofer/prolog_notes/blob/master/prolog_exercises/puzzles/who_is_the_hacker.pl)
Run it on your machine if you have a Prolog or online in [SWISH which is based on SWI-Prol... |
To start with, here's what we can initially determine about the numbers for each clue:
1. Nickel-niobium-beryllium
>! I believe we should use the atomic numbers for these elements, giving us 28 41 4
2. SQRT(2)
>! The square root of 2 starts with 1.4142 -> 14142
3. π
>! 3.1415926... -> 31415
4. e
... |
<h1>Main answer</h1>
First, I'd like you to take a look at the example sentences from the two links you provided ([1](https://english.stackexchange.com/questions/7894/x-times-as-many-as-or-x-times-more-than/7897), [2](https://www.wyzant.com/resources/answers/14937/sheila_has_5_times_as_many_markers_as_dave_togethe... |
This puzzle is a one I met in an IQ test. I believe it's tricky, however, the concept is quite simple.
> How many minutes is it before 12 noon if 68 minutes ago it was three times as many minutes past 10 a.m.?
Suppose x is the minutes before 12 noon.
*Now I have 3 meanings with 3 different solutions*
1. … ... |
How many minutes is it before 12 noon? |
What 6 letter word has the same properties?
>The whole makes harm,
>
>5 letters makes me displeasured,
>
>4 letters makes me a national greenhouse,
>
>3 letters, makes me a wooden canvas.
>
>2 letters is in a medical facility,
>
>Lastly, for 1 letter, you may wanna request this.
|
Here is my simple methodology;
Let's call
>! fake as $F$, genuine as $G$ and if stay equal ($E$) if not equal ($NE$);
then
**Step 12v34**
>! Weigh two coins against two coins
and the possible outcomes become;
| | 12 | 34 | Result |
|-----|----|----|--------|
| I | GG | GF | NE |
| II... |
I've been going in circles with this question which belongs to certainty about something. The original source of this problem is unknown. I found it in a textbook who doesn't have an author but rather a collection of riddles about combinatorics and different problems.
The problem is as follows:
> A porcelain jar ... |
My friend William and I wanted to make a word search (number search?) of five digit numbers in a 5x5 grid, filling all spaces to form 12 clues.
To simplify things, we decided we would add a single leading zero if the value was less than one, drop any decimal symbol, and truncate at 5 digits if needed.
So, for exa... |
I got a shchiekcemn and I decided to create a roast. I gave it to a co-worker and gave her the clues. After some time, she told me I messed up.
For some context, here are the clues:
1. Fire, Black, Destroy
2. Poison, Salmonella, Disgust
3. Gravy, Mayonnaise, Butter
So why did she claim I ruined it?
**H1**... |
I got a shchiekcemn and I decided to create a roast. I gave it to a co-worker. After some time, she told me I messed up.
Here are the clues what's with the roast:
1. Fire, Black, Destroy
2. Poison, Salmonella, Disgust
3. Gravy, Mayonnaise, Butter
So why did she claim I ruined it?
**H1**:
>! L1 & L3 has... |
Can you give a good rational approximation of
$$\sqrt[3]2 \times \sqrt[4]2$$
without doing any significant maths?
Hint:
>! I've left out one appropriate tag because it would be too much of a hint.
Attribution: Mine.
|
The answer is that William had clues
>! 5 and 10, and they are written upside-down relative to the other clues.
To start with, here's what we can initially determine about the numbers for each clue:
1. Nickel-niobium-beryllium
>! I believe we should use the atomic numbers for these elements, giving us 28 4... |
Does secessionists (5/13) qualify?
### Edit
I know this won't qualify to win, but I found one with five s with a better ratio
assessments (5/11)
|
Not a real answer but, any pokemon fans ? :)
Eevee ( 4 / 5 )
And also:
Atacama ( 4 / 7 ) 'a desert in Chile'
Scissors ( 4 / 8 )
Milli-millillion ( 6 / 15 )
riffaff ( 4 / 7 )
protozoology ( 5 / 12 )
stresslessness ( 7 / 14 )
|
This is probably wrong, but I've learned that
1. Occasionally the 'probably wrong' answer is actually right, and
2. A wrong answer may give others helpful insight.
So here goes:
The Preparation:
FIRE, BLACK, DESTROY
>! These are all synonyms for 'break/remove/separate'
GRAVY, MAYONNAISE, BUTTER ... |
I found this problem in my book "Riddles and Reason" and after several attempts I still have no idea how to tackle it.
The problem is as follows:
> The figure from below shows a truncated pyramid. How different ways can you go from from point to point without going through by the same vertex more than once by t... |
The situation is as follows:
> At a semiconductor laboratory in Hsinchu a security guard caught five technicians accessing a high level security area reserved for the most trusted scientists working in a new integrated circuit for an upcoming computer. However the security film is not very clear and the security tea... |
Five possible liars - any way to solve with a grid-based method? |
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