instruction stringlengths 15 30k |
|---|
Claire, Katia and Lila like to have dinner together.
1. Each of them always orders either coffee or tea after dinner.
2. If Claire orders coffee, then Katia orders the drink that Lila orders.
3. If Katia orders coffee, then Claire orders the drink that Lila doesn't order.
4. If Lila orders tea, then Claire ... |
There are already two good answers. Here's the laziest approach, which only works because we are feeling lucky.
Step 1: Take any 4x4 magic square with the property that the numbers 1-4 don't appear in the same row, column, or diagonal, and the same is true for blocks 5-8, 9-12, and 13-16. The first completed grid in... |
In Most Captures Chess puzzle, you will need to provide a legal game where it is Blacks to play and where Blacks have the most different ways to capture a White piece.
For instance, the next game allows two ways for Blacks to capture a White piece.
> **1.** e4 d5
> **2.** c4
[![enter image description here]... |
In Most Captures Chess puzzle, you will need to provide a legal game where it is Blacks to play and where they have the most different ways to capture a White piece.
For instance, the next game allows two ways for Blacks to capture a White piece.
> **1.** e4 d5
> **2.** c4
[![enter image description here][1... |
Hmmm. Could it be
>! counter-strike?
because
>! Each line seems to include the name of a map, namely:
>! de_nuke, de_train, de_mirage, clouds?(not 100% sure), de_vertigo, de_inferno, de_dust
and of course
>! The entire paragraph is about blowing up, which is the case for all de_ (for bomb DEfusal) maps |
Hmmm. Could it be
>! counter-strike?
because
>! Each line seems to include the name of a map, namely:
>! de_nuke, de_train, de_mirage, clouds?(not 100% sure), de_vertigo, de_inferno, de_dust
and of course
>! The entire paragraph is about blowing up, which is the case for all de_ (bomb DEfusal) maps |
In Most Captures Chess puzzle, you will need to provide a legal game where it is Blacks to play and where they have the most different ways to capture a White piece.
For instance, the next game allows two ways for Blacks to capture a White piece.
> **1.** d5 e4
> **2.** d5 c4
[![enter image description here... |
In Most Captures Chess puzzle, you will need to provide a legal game where it is Blacks to play and where they have the most different ways to capture a White piece.
For instance, the next game allows two ways for Blacks to capture a White piece.
> **1.** e4 d5
> **2.** c4
[![enter image description here][1... |
- our prefix makes us taller... sometimes.
- our infix is something you are, starting from today.
- our suffix is one of our elements.
> Who are we and why is today such an important day for us?
Hint 1
>! the suffix clue is related to [tag:science].
|
You wake up in a lab room, with papers, test tubes, computers, not understanding how you got there. A scientist is across the room.
"Welcome to my secret lab", he says. "To get out, you must pass the Atom Riddles. "
"I've been puzzled too much! Can you make it quick? And I don't like science that much", you say ... |
I could not solve a question from an online IQ test:
[![enter image description here][1]][1]
Transcription of image:
What is the number in the * cell?
| | | | |
|--|--|--|--|
|9 |38|47|4 |
|6 |35|42|* |
|12|21|23|27|
The options were:
10, -5, 32 and 18
The only pattern that I managed to f... |
I asked my cousin where he's studying. He didn't answer directly, but said some random sentences.
> *You love taking photographs, then you're much nearer.*
*Do first, think later!*
*You're looking for an animal and a vehicle.*
Could you find where my cousin is studying? |
Can you collect all the gifts?
The rules:
- Start from the star
- At each intersection are arrows. You can only move through the intersection in accordance with the direction of the arrow. (e.g If you hit an intersection with an arrow pointing down and to the left, when you hit that intersection you can only c... |
Almost paper folding, but maybe not? |
IQ test question - Almost paper folding, but maybe not? |
What's next on this list?
> JBNRS, HF, GM, JPD, VL, AELMP, MS, WB, CB, GS, EC, SV, PD, PEJP, ?, … |
Can you collect all the gifts?
The rules:
- Start from the star
- At each intersection are arrows. You can only move through the intersection in accordance with the direction of the arrow. (e.g If you hit an intersection with an arrow pointing down and to the left, when you hit that intersection you can only c... |
<sub>*In the spirit of the What is a [Word™](https://puzzling.stackexchange.com/search?q=%22I+call+it%22+title%3A%22what+is%22+title%3Aword+is%3Aquestion)/[Phrase™](https://puzzling.stackexchange.com/search?q=%22I+call+it%22+title%3A%22what+is%22+title%3Aphrase+is%3Aquestion) series started by [JLee](https://puzzling.s... |
## Background definition: XOR on numbers
Given two non-negative integers $x$ and $y$, let $x\oplus y$ denote the [*bitwise exclusive or*](https://en.wikipedia.org/wiki/Bitwise_operation#XOR) (XOR) of the numbers $x$ and $y$. This is the result of writing $x$ and $y$ in binary notation, then XORing corresponding bit... |
When do decimal-coded binary numbers XOR to zero? |
Let's have two 8x8 GRIDS. By visual inspection we see they are filled with trominoes of three different colors. There are 7 trominoes of each color. On the GRIDS the trominoes are not allowed to touch anywhere side to side with the same color. As you can see the position A4 has two pairs marked with red ink and the po... |
Let's have two 8x8 GRIDS. By visual inspection we see they are filled with trominoes of three different colors. There are 7 trominoes of each color. On the GRIDS the trominoes are not allowed to touch anywhere side to side with the same color. As you can see the position A4 has two pairs marked with red ink and the po... |
Let's have two 8x8 grids. By visual inspection we see they are filled with trominoes of three different colors. There are 7 trominoes of each color. On the grids the trominoes are not allowed to touch anywhere side to side with the same color. As you can see the position A4 has two pairs marked with red ink and the pos... |
I think the answer is
>!<p>If you group a 6-letter Rainbow Word into 3 pairs of letters, convert each letter to A=0, B=1, ..., Z=25 (0-based indexing in the programming world), and concatenate the numbers in each pair, you get a valid RGB color value written in decimal, as in (0, 0, 0) being black and (255, 255, 255... |
I think the answer is
>!<p>If you group a 6-letter Rainbow Word into 3 pairs of letters, convert each letter to A=0, B=1, ..., Z=25 (0-based indexing in the programming world), and concatenate the numbers in each pair, you get a valid RGB color value written in decimal, as in (0, 0, 0) being black and (255, 255, 255... |
Here is a cryptic clue can you solve it?
A drink around pledge's entrance- makes walking elevated with a bit of risk. Elementary? Certainly fiction! (15) |
Here is a cryptic clue, can you solve it?
A drink around pledge's entrance- makes walking elevated with a bit of risk. Elementary? Certainly fiction! (15) |
Hmmm. Could it be
>! counter-strike?
because
>! Each line seems to include the name of a map, namely:
>! de_nuke, de_train, de_mirage, de_overpass, de_vertigo, de_inferno, de_dust
and of course
>! The entire paragraph is about blowing up, which is the case for all de_ (bomb DEfusal) maps |
[![enter image description here][1]][1]
there must be a better way of solving. Can someone tell me what is the correct answer and reasoning? Thank you.
[1]: https://i.stack.imgur.com/Ajkvz.png |
[![enter image description here][1]][1]
There must be a better way of solving. Can someone tell me what is the correct answer and reasoning? Thank you.
Transcription of the image:
| | | |
|--|--|--|
|3 |4 |5 |
|5 |6 |16|
|8 |12|52|
|14|14|? |
[1]: https://i.stack.imgur.com/Ajkvz.png |
I think the answer is
>! Rumplestiltskin
Reasoning
>! "A drink" - RUM
>! "around pledge's entrance" - PLE is pledge's entrance and RUM is around (close to) this
>! "makes walking elevated" - STILT
>! "with a bit of risk" - SK (end of risk)
>! "Elementary?" - IN (In is the chemical symbol for the elem... |
There is a 6 by 6 dot-grid. You will draw two squares by joining the dots.
- The squares cannot have common dots/points or areas.
- Rotations or reflections of a drawing are considered **distinct**.
> In How many ways can this drawing be accomplished?
[![enter image description here][1]][1]
The figure ab... |
How many shapes can you form with squares? |
Previous level and introduction: [The Atom Riddles #1][1]
**Rules**:
* Again, you are trapped in a room by the same mad scientist.
* There are clues in each sentence you read. You have to find the correct atomic element that matches the clues.
Here is my riddle for today.
> I am an tragic element to fuse in ... |
I'm known to make memories, to help preserve the past.
But have you considered a turn to that statement?
One click out of me, and you've shot who's in front of me.
Though used to prevent, I can cause lament.
I'm much deadlier than most weapons, who says I can only shoot people?
The click doesn't just m... |
Previous level, introduction: [The Atom Riddles #1][1]
**Rules**:
* Again, you are trapped in a room by the same mad scientist.
* There are clues in each sentence you read. You have to find the correct atomic element that matches the clues.
Here is my riddle for today.
> I am an tragic element to fuse in sta... |
Are you a
>! CAMERA?
*I'm known to make memories, to help preserve the past.*
>! Cameras take photos to help you preserve memories of the past.
*But have you considered a turn to that statement?*
>! Not sure about the "turn" stuff.
*One click out of me, and you've shot who's in front of me.*
>! A p... |
Previous level, introduction: [The Atom Riddles #1][1]
**Rules**:
* Again, you are trapped in a room by the same mad scientist.
* There are clues in each sentence you read. You have to find the correct atomic element that matches the clues.
Here is the real riddle.
> I am an tragic element to fuse in stars. ... |
It doesn't fit that much with the clues, but
>! People?
I'm able to make memories, to help preserve the past
>! People make paintings and write and other ways of preserving the past
One click out of me, and you've shot who's in front of me.
>! I don't see how that fits though
Though used to prevent, I can... |
You wake up in a lab room, with papers, test tubes, computers, not understanding how you got there. A scientist is across the room.
"Welcome to my secret lab", he says. "To get out, you must complete the Atom Riddles. "
"I've been puzzled too much! Can you make it quick? And I don't like science that much", you ... |
There is a famous investment firm where a partner was known for having candidates walk into the room without a greeting, sit across from him at a huge desk, and start right away by asking:
"We accept 20% of the people who apply. I'm 90% good at my job [of vetting]. What percentage of people who work here shouldn't h... |
Previous level, introduction: [The Atom Riddles #1][1]
**Rules**:
* Again, you are trapped in a room by a mad scientist.
* There are clues in each sentence you read. You have to find the correct atomic element that matches the clues.
Here is the real riddle.
> I am an tragic element to fuse in stars. <br />
... |
I was always useless at memorising poetry and stuff. I tried putting the poems into my own words as a reminder. The problem is that I only remember my versions now and have forgotten the originals!
Here's my memory aid for a bit of verse but sadly I can't remember the original version. Can you sort it out? There's b... |
Can you name my sister? |
There are 6 major political parties in a country. An organization conducted a survey for these 6 major political parties to see what people are going to vote for. The results of the survey, in percentage terms, are as follows:
[![enter image description here][1]][1]
In their calculation, they rounded percentages ... |
I was always useless at memorising poetry and stuff. I tried putting the poems into my own words as a reminder. The problem is that I only remember my versions now and have forgotten the originals!
Here's my memory aid for a bit of verse but sadly I can't remember the original version. Can you sort it out? There's b... |
> I look flat, but I am deep,
Hidden realms I shelter.
Lives I take, but the food I offer.
At times I am beautiful.
I can be calm, angry and turbulent.
I have no heart but offer pleasure as well as death.
No man can own me, yet I encompass what all men must-have.
As said on the title, ‘I am every w... |
I was always useless at memorising poetry and stuff. I tried putting the poems into my own words as a reminder. The problem is that I only remember my versions now and have forgotten the originals!
Here's my memory aid for a well-known bit of verse but sadly I can't remember the original version. Can you sort it out... |
I was always useless at memorising poetry and stuff. I tried putting the poems into my own words as a reminder. The problem is that I only remember my versions now and have forgotten the originals!
Here's my memory aid for a well-known bit of verse but sadly I can't remember the original version. Can you sort it out... |
There are 6 major political parties in a country. An organization conducted a survey for these 6 major political parties to see what people are going to vote for. The results of the survey, in percentage terms, are as follows:
| Parties | Percentage (%) |
|---------|----------------|
|PP1 |13.5 |
... |
Most people here have zeroed in on the underdefined statement of "90% good". I would try to be a good Bayesian here:
>! While statisticians have many different metrics for determining the quality of a prediction, I would assume that the manager here is not aware of them - first because most managers don't have this... |
Most people here have zeroed in on the underdefined statement of "90% good". I would try to be a good Bayesian here:
>! While statisticians have many different metrics for determining the quality of a prediction, I would assume that the manager here is not aware of them - first because most managers don't have this... |
The answer is
>!'QUANTITY sacrifices QUALITY. If you're going to focus QUALITY over QUANTITY you should QUIT.
So
>!1 = Q, 2 = U, 3 = A, # = NT/L, 4 = I, 5 = T, 6 = Y
Think the last two may be the wrong way round? :P |
The message is
>!'**QUANTITY** sacrifices **QUALITY**. If you're going to focus **QUALITY** over **QUANTITY**, you should **QUIT**.
So
>!1 = Q
>!2 = U
>!3 = A
>!4 = I
>!5 = T
>!6 = Y
>!# = N,T,L
Think the last two may be the wrong way round? Otherwise I agree :P
|
There are 100 prisoners, each prisoner is given a number between 1 and 100 without knowing which number, the number can repeat and not all of the numbers must be given.
Each prisoner in his turn can guess his number, if he succeed, all of the prisoners are freed (they cant hear the other guesses).
Each prisoner i... |
## Background definition: XOR on numbers
Given two non-negative integers $x$ and $y$, let $x\oplus y$ denote the [*bitwise exclusive or*](https://en.wikipedia.org/wiki/Bitwise_operation#XOR) (XOR) of the numbers $x$ and $y$. This is the result of writing $x$ and $y$ in binary notation, then XORing corresponding bit... |
<sub>Welcome back to the Density™ series! I had intended to make these more often, but then... well... 2020 happened. Anyway, I finally got round to creating the second puzzle, and perhaps it may hint at one of the things that distracts me from making puzzles...
<br/>
<br/>
The previous Density™ is here: https://puz... |
You have a large collection of dominos, each labeled with two distinct symbols drawn from some infinite alphabet. The symbols have 180-degree rotational symmetry so dominoes can be rotated. In other words, these two dominoes are equivalent:
+---------+---------+ +---------+---------+
... |
*Entry into https://puzzling.meta.stackexchange.com/questions/6458/fortnightly-topic-challenge-38-reusing-information-1*
[![Periodic Table of Elements... but perhaps a little more puzzly?][1]][1]
Isn't it nice to have the same information to depend on, that you know will be reused? ... Wait, who said that you wer... |
Your sister's name is
>! May
> Pwhoar what a scorcher! Yes you!
>! Shall I compare thee to a summer's day?
> Not bad looking and you keep yer lid on too
>! Thou art more lovely and more temperate.
> Flatulence shocks my sister's dearest friends - phew!
>! Rough winds may shake the darling buds o... |
You have a large number of $60^\circ$ rhombi called "lozenges." Each lozenge has its edges marked with four distinct symbols drawn from an infinite alphabet. Lozenges may be rotated by $180^\circ$ or reflected across either axis. A triple of lozenges forms a "hex" if the markings can be matched up in the following w... |
You have a large number of 60° rhombi called "lozenges." Each lozenge has its edges marked with four distinct symbols drawn from an infinite alphabet. Lozenges may be rotated by 180° or reflected across either axis. A triple of lozenges forms a "hex" if the markings can be matched up in the following way:
... |
Normal Sudoku rules apply. In addition no L-shaped tetromino can contain four consecutive digits (for instance you can't have r2c9=5,r4c9=8). The little killer clue indicates cells on the indicated diagonal must sum to 40 and may contain repeated digits.
**Source: Cracking The Cryptic, 10 December 2020**. Obviou... |
[![enter image description here][1]][1]
Nine clues are not like the others. Solvers must identify the unusual clues and highlight the corresponding answers in the grid. To help with this task, the grid has two unclued entries which hint at what these clues have in common. To make things a bit more difficult, I have ... |
What should replace the question mark on this list?
> JBNRS, HF, GM, JPD, VL, AELMP, MS, WB, CB, GS, EC, SV, PD, PEJP, ?, … |
Completed and highlighted grid:
>! [![enter image description here][1]][1]
The clues that are not like the others are
>! the ones containing (as 2a, 7d tell us) FINNISH CITIES. I regret that I didn't choose quite the right colour for highlighting (a somewhat darker blue is called for); I only realised once I'd... |
[![enter image description here][1]][1]
Nine clues are not like the others. Solvers must identify the unusual clues and highlight the corresponding answers in the grid. To help with this task, the grid has two unclued entries which hint at what these clues have in common. To make things a bit more difficult, I have ... |
Completed and highlighted grid:
>! [![enter image description here][1]][1]
The clues that are not like the others are
>! the ones containing (as 2a, 7d tell us) FINNISH CITIES. I regret that I didn't choose quite the right colour for highlighting (a somewhat darker blue is called for); I only realised once I'd... |
My (fictional) riddle-loving friend comes up to me and says, "Hey, bro, I gave you a present. "
"Um, is this a puzzle?", you ask.
"Yes.... But it's going to be a riddle", he says. You groan. It's going to be another of his crazy riddles.
He gives you a piece of paper which says:
> **I can mote**. <br />
> ... |
What is the Present? |
My (fictional) riddle-loving friend comes up to me and says, "Hey, bro, I gave you a present. "
"Um, is this a puzzle?", you ask.
"Yes.... it's going to be a riddle", he says. You groan. It's going to be another of his crazy riddles.
He gives you a piece of paper which says:
> **I can mote**. <br />
> **Bu... |
Previous Level:- https://puzzling.stackexchange.com/questions/104792/lasers-moving-mirrors-level-7
Here is another level of the continuation of my game. I have some doubled mirrors as a gift!
**Rules** :
- There will be lasers that are shaped like an arrow. The arrows pointing in the respective direction show... |
As DmiHawk said, the correct answer is 10% (making some reasonable assumptions: the ratio of good vs bad applicants in the general population is 50/50, he is equally able to judge good and bad applicants, he is the first to join the company, the number of employees is close to infinity, he only wants to hire good appli... |
This feels like a math problem more than a math puzzle.
Part 1
>! 540
Part 2
>! (0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 95.5)
Part 1 by brute force
>! 540
>! for individual groups of 73, 82, 193, 110, 44, 23, 15
Method
>! Using a spreadsheet, make the lower bound = the rounded percent - 0.05.
>! The uppe... |
As DmiHawk said, the correct answer is 10% (making some reasonable assumptions: the ratio of good vs bad applicants in the general population is 50/50, he is equally able to judge good and bad applicants, he is the first to join the company, the number of employees is close to infinity, he only wants to hire good appli... |
This feels like a math problem more than a math puzzle.
Part 1
>! 540
Part 2
>! (0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 98.2)
Part 1 by brute force
>! 540
>! for individual groups of 73, 82, 193, 110, 44, 23, 15
Method
>! Using a spreadsheet, make the lower bound = the rounded percent - 0.05.
>! The uppe... |
This feels like a math problem more than a math puzzle.
Part 1
>! 540
Part 2
>! (0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 98.2) for **10001**
Part 1 by brute force
>! 540
>! for individual groups of 73, 82, 193, 110, 44, 23, 15
Method
>! Using a spreadsheet, make the lower bound = the rounded percent - 0.05... |
One way of reading it is that the statement about 20% represents a hard limit. This means that his task is to hire the best 20% of people that apply.
>! This is the first way I looked at it, and the only criteria that would be meaningful
>! with this hard limit is that 90% of the people he hired were the right c... |
> What percentage of people who work here shouldn't have been accepted?
To this, I say,
>! None, not anymore. 0%.
because
>! To know he's 90% good at vetting, he has to know how many good/bad decisions he's made, so he probably knows exactly who was a bad hire. If he knows that, then based on the strict 20%... |
Two Forex traders are trying to communicate about their trades.<br> They send each other images with a hidden meaning like this one:
[![enter image description here][1]][1]
Can you work out which currencies they are trading?
[1]: https://i.stack.imgur.com/DBZUo.png |
Two Forex traders are trying to communicate about their trades.
They send each other images with a hidden meaning like this one:
[![enter image description here][1]][1]
Can you work out which currencies they are trading?
[1]: https://i.stack.imgur.com/DBZUo.png |
I heard this number sequence problem about 25 years ago from a maths lecturer.
What number should go in the place of the question mark in this mathematical sequence:
..., 30, ?, 60, 90, 140, 225, 372, 630, ...
I generally dislike number sequence puzzles, but the (intended) answer to this puzzle is so surprisin... |
I'd say:
>! **Any** number can go in the place of the question mark!
Let's index the numbers $a_{n}$, $-1 \le n \le 6$, with $a_0$ the missing one.
Now let's look at the following table:
|n |-1 |0 |1 |2 |3 |4 |5 |6 |
|------------------------|----|----|----|----|----|--... |
This appears to be a Siebenstein-Spiele [Miro](https://www.puzzlebraingames.com/miro/) puzzle.
Here is a solution from [Sloyd](https://www.sloyd.fi/miro-p-1189.html?language=en):
>!  |
A friend of mine found another solution but, despite my cajoling, declines to post here.
As we know from the [other answer](https://puzzling.stackexchange.com/a/105530/63291), any solution must
>! include a number $\ge 168$, and in particular $\ge 8$ bits long.
The code below finds a couple solutions achieving t... |
>***Which of the six tiles below is missing?*** <br> <br> [![IQ Question][1]][1]
[1]: https://i.stack.imgur.com/QdYQk.png
I honestly do not know the answer. I took a screenshot of this from an online IQ test a while back. If you know where it is from, please let me know, and I will [provide attribution](https... |
Introduction: [The Atom Riddles #1][1]
Previous level: https://puzzling.stackexchange.com/questions/105545/the-atom-riddles-2
**Rules**:
* Again, you are trapped in a room by the mad scientist.
* There are clues in the sentences. You have to find the correct atomic element that matches the clues.
Here is the... |
[Link to other riddles in this series](https://puzzling.stackexchange.com/search?q=user%3A56715+title%3A%22The+Atom+Riddles%22)
**Rules**:
* Again, you are trapped in a room by the mad scientist.
* There are clues in the sentences. You have to find the correct atomic element that matches the clues.
Here is th... |
[Link to other riddles in this series](https://puzzling.stackexchange.com/search?q=user%3A56715+title%3A%22The+Atom+Riddles%22)
**Rules**:
* Again, you are trapped in a room by the mad scientist.
* There are clues in the sentences. You have to find the correct atomic element that matches the clues.
Here is th... |
[Link to other riddles in this series](https://puzzling.stackexchange.com/search?q=user%3A56715+title%3A%22The+Atom+Riddles%22)
**Rules**:
* Again, you are trapped in a room by the mad scientist.
* There are clues in the sentences. You have to find the correct atomic element that matches the clues.
Here is th... |
**What is my favorite number?**
You need to find my favorite number from these clues below.
---
I am in cars, but not in buses. <br />
I have two in cucumbers, but only one in clicks. <br />
I am in computers, but not phones.
---
I am not weird, but I am strange. <br />
I am in batteries, but not in plugs. ... |
What's my favorite number? |
- our prefix makes us taller... sometimes.
- our infix is something you are, starting from today.
- our suffix is one of our elements.
> Who are we and why is today such an important day for us?
Hint 1
>! The suffix clue is related to [tag:science].
Hint 2
>! The grammar in the infix part is a bit stre... |
**What is my favorite number?**
You need to find my favorite number from the clues shown below and the hints.
---
I am in cars, but not in buses. <br />
I have two in cucumbers, but only one in clicks. <br />
I am in computers, but not phones.
---
I am not weird, but I am strange. <br />
I am in batteries, ... |
**What is my favorite number?**
You need to find my favorite number from the clues shown below and the hints.
---
I am in cars, but not in buses. <br />
I have two in cucumbers, and two in clicks. <br />
I am in computers, but not phones.
---
I am not weird, but I am strange. <br />
I am in batteries, but n... |
Scientist:
So.... https://puzzling.stackexchange.com/questions/105614/the-atom-riddles-3 didn't go too well. It was closed for being too simple.
But I'm not going to give up! I've come back with a harder, more interesting riddle! Mwahahaha!
Part 1 (Wordplay):
> I have a nosth and a south, but I am not the e... |
I've created this ,what do You think should be drawn as the next shape?
[![enter image description here][1]][1]
[1]: https://i.stack.imgur.com/YinEK.png |
Find the pattern here:
> 10 11 21 247 29 391 ? ? ?
<sub><sub>I'm probably making too much bad puzzles - 3 in a single day and two of them bad. </sub></sub> |
Find the pattern here:
> 10 11 21 247 29 391 ? ? ? |
In [this puzzle book](https://baike.baidu.com/item/%E5%93%88%E4%BD%9B%E7%BB%99%E5%AD%A6%E7%94%9F%E5%81%9A%E7%9A%84450%E4%B8%AA%E5%A4%9A%E5%85%83%E6%99%BA%E8%83%BD%E8%AE%AD%E7%BB%83%E6%B8%B8%E6%88%8F), I came across a question that goes like this:
> Make the numbers from 1-10 using 5 3s.
Rules:
> You are only allo... |
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