Puzzles / Riddles

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Puzzles and riddles are statements and questions framed such that they require ingenuity and imagination to resolve. Most are mathematical conundrums, but can also include the arcane, trivial or simply funny.

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Hello Fellow Experts!

I work with service dogs, and our family dog is a breeding dog for the program who is about to have her first litter.

I had the Idea of having her litters be named using a theme of Computers/Technology/Video games.

To do this we need to think of three (3) categories with Fifteen (15) names each that collectively fit this theme.

I need your help narrowing down categories, and coming up with more names for the categories we decide to use.

For example, I got the Idea for this by thinking it would be fun to name dogs these names:
  • Packet
  • Port
  • Socket

The program's organizer liked this Idea and said the would love to have a dog named TeraByte.

However, as I think of names they tend to come from all over and I can see multiple ways of categorizing them, and I tend to be picking names from all over as one big list making it hard to split up.

Here are some ways of Categorizing which I was considering:
  • Network/Internet Terms
  • Communication Software/Services
  • Productivity Software
  • Computer/Console Hardware
  • PC and Video Games
  • Technology professions and terms

Lets discuss which of these are good and whether there are others that might be better.


Here are additional names I have thought of, as you can see they could be categorized many ways:
  • MegaByte/MegaBit
  • FTP
  • email
  • twitter
  • hashtag
  • SQL (Pronounced Sequel) -- I figure we have to put the pronunciation down for anything not obvious to a non-technical person)
  • Java
  • Powershell
  • Sega
  • Atari
0
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Tori make ten-digit number using 0,1,2,3,4,5,6,7,8,9 by putting the digits in alphabetical order of their reversed names .what is tori's ten digit number.

Thanks
0
Black friday shopping!  Walmart and Staples has the 3600 on sale.  But there's a 3700.  higher number, I think is better?

But wikipedia says 3700 is only b/n/g (2.4GHz) and came out in October 2016.  the 3600 came out in april 2016 but has 2.4 / 5GHz.

trying to see the differences beyond that.  Can you help?

thanks
0
What is the maximum distance of x in order to limit the slope change to less than .15 degrees?
max-distance-of-x.jpg
0
Hi.

It can be no hard for you guys, but my knowledge in cryptography or anything related is near to 0. So, if anyone can help me.

The puzzle is:

⬅ ➡ ↘

QPLFEFY

15, 41, 54, 59, 201, 255, 355

It's a 7 letters word.
0
Down here in NZ students have just recently sat a horrible algebra paper.  It appears that the examination authority didn't tell the teachers that changes were going to occur in the algebra exam so the teachers taught to what previous exams had asked for.  And all hell has broken loose.

So the attached graphic is a question that occurred in the exam.

Question
I can do most of the paper (with a little bit of revision if I dig out the books) but the question above does not make sense to me.

So what do fellow experts make of it?  If anyone wants the full paper I can supply links.
0
Hi,

I am working on below challenge
http://codingbat.com/prob/p183407

Psedo code:
1. create new array of given difference of size
2. loop through given array
3. fill the new array with given array starting from above difference till end
4. return new array as list
I wrote my code as below

public List wordsWithoutList(String[] words, int len) {
 int count=0;
 int origlen=words.length;
 int newLen=origlen-len;
 String[] arr=new String[newLen];
 for(int i=len-1;i<newLen;i++){
  arr[i]=words[i];
  
 
}
return Arrays.asList(arr);
}

Open in new window




I am not passing all tests
Expected      Run            
wordsWithoutList(["a", "bb", "b", "ccc"], 1) → ["bb", "ccc"]      ["a", "bb", "b"]      X      
wordsWithoutList(["a", "bb", "b", "ccc"], 3) → ["a", "bb", "b"]      [null]      X      
wordsWithoutList(["a", "bb", "b", "ccc"], 4) → ["a", "bb", "b", "ccc"]      []      X      
wordsWithoutList(["xx", "yyy", "x", "yy", "z"], 1) → ["xx", "yyy", "yy"]      ["xx", "yyy", "x", "yy"]      X      
wordsWithoutList(["xx", "yyy", "x", "yy", "z"], 2) → ["yyy", "x", "z"]      [null, "yyy", "x"]      X      

How to improve/modify my design, code and any other alternate approaches. please advise
0
Hi,

I am working on below challenge
http://codingbat.com/prob/p183837

Psedo code:
1. create new array of given n size
2. loop through given array
3. fill the new array with given array
4. return new array
I wrote my code as below

public String[] wordsFront(String[] words, int n) {
 int count=0;
 String[] arr=new String[n];
for(int i=0;i<n;i++){
  arr[i]=words[i];
  
 
}
return arr;
}

Open in new window




I am passing all tests

How to improve/modify my design, code and any other alternate approaches. please advise
0
I need your help to identify the song below:
https://soundcloud.com/viki2000/excerpt

It sounds so familiar from Youtube, but I cannot remember it.
It may be soundtrack or instrumnetal.
0
I am doing a research for the subject medicine.

Do you have the encounter with this medicine?

Tell me your experience.

Or, just help me to look up medical information.

Thanks!
0
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LVL 8
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One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Dear experts,

I have included the Article (section or regulatory requirements) for calculating the CVA. This formula is provided by Basel and has been adopted by the EBA.

I need help in trying to understand the mathematical operation for arriving at the CVA.

While I am aware that that my question is vague. I will appreciate if anyone can start at a high level in providing the following information:
1. What does the formulae achieve by calculating the square root of a portion of the value which is a square of sum of the individual values (A) and the other section being the sum of the squares of the individual values (B).

Thank you
CVA-question.docx
0
I never expected this to be so difficult.

I need a database (in any form) listing the following:

Date
CountryAttacking
CountryAttacked
Location
War
NumberKilled
NumberWounded

I need this in TXT, CSV or Excel or any other format. I do not need web pages if dates that I need to read. But I could consider screen scraping...as a lot resort.

Any links to this?

This is a bit of a puzzle ;P


Thanks
0
I miss a word. It is somewhere deep in my mind and I cannot take it out.
I need a brainstorming to help me to take it out and remember it.
To increase the confusion, I am not so sure if I will be able to define it properly.
Here it is:
-      How do you name/call a person/individual who represents a group, having the same characteristics?
-      When you look at that individual, you see trough/in that person all the others. Like a model, a special type. Maybe is a word related with “type”, maybe sounds as genotype, maybe in Latin.
-      Stereotype is too banal, ordinary and has not a nice connotation.
-      Archetype sounds better, but for me seems that involves something ancient or something initial that was first time.
-      I need the word to express a common set of problems and values. I would like to apply this word or expression to describe a family in needs, which in fact is one family out of thousands in the same situations with the same needs and problems and values. The description would be used to designate all the other families using the name of that representative family.
-      What is that word or expression?
Any other suggestion is welcome.
0
I need to look up telephone numbers of people living in the country Switzerland.
Is there a free WHITE PAGES that has this information online?
I tried searching and the results always seemed to be to sites that CHARGED money for this information.

Any ideas of free sites?

Thank you.
0
Hi,
I am working on below challenge
http://codingbat.com/prob/p136594
I tried my code as below
public boolean xyzThere(String str) {
 int xPos= str.indexOf('x');
 int len=str.length();
 
 String sub=str.substring(xPos,len);
 if(sub.equals("xyz")){
 return true;
 }
 else{
 return false;
 }
}

Open in new window

I am getting below result
Expected      Run            
xyzThere("abcxyz") → true      true      OK         
xyzThere("abc.xyz") → false      true      X         
xyzThere("xyz.abc") → true      false      X         
xyzThere("abcxy") → false      false      OK         
xyzThere("xyz") → true      true      OK         
xyzThere("xy") → false      false      OK         
xyzThere("x") → false      false      OK         
xyzThere("") → false      Exception:java.lang.StringIndexOutOfBoundsException: String index out of range: -1 (line number:5)      X         
xyzThere("abc.xyzxyz") → true      false      X         
xyzThere("abc.xxyz") → true      false      X         
xyzThere(".xyz") → false      true      X         
xyzThere("12.xyz") → false      true      X         
xyzThere("12xyz") → true      true      OK         
xyzThere("1.xyz.xyz2.xyz") → false      false      OK         
other tests
X

how to  improve my approach, results and design of this challenge. How do i make a graphical venn or flow chart or some other relevant diagram to design it before writing code to decide best strategy?
 Please advise
0
Hi,
I am working on below challenge
http://codingbat.com/prob/p126880
I tried my code as below
public boolean endOther(String a, String b) {
  int aLen=a.length();
  int bLen=b.length();
  
 int diff=aLen-bLen;
 int absDiff=Math.abs(diff);
 
 if(a.substring(absDiff)==b||b.substring(absDiff)==a){
 return true;
 }
 else{
 
 return false;
 }
}

Open in new window

I am getting below result
Expected      Run            
endOther("Hiabc", "abc") → true      false      X         
endOther("AbC", "HiaBc") → true      false      X         
endOther("abc", "abXabc") → true      false      X         
endOther("Hiabc", "abcd") → false      false      OK         
endOther("Hiabc", "bc") → true      Exception:java.lang.StringIndexOutOfBoundsException: String index out of range: -1 (line number:8)      X         
endOther("Hiabcx", "bc") → false      Exception:java.lang.StringIndexOutOfBoundsException: String index out of range: -2 (line number:8)      X         
endOther("abc", "abc") → true      true      OK         
endOther("xyz", "12xyz") → true      false      X         
endOther("yz", "12xz") → false      false      OK         
endOther("Z", "12xz") → true      Exception:java.lang.StringIndexOutOfBoundsException: String index out of range: -2 (line number:8)      X         
endOther("12", "12") → true      true      OK         
endOther("abcXYZ", "abcDEF") → false      false      OK         
endOther("ab", "ab12") → false      false      OK         
endOther("ab", "12ab") → true      false      X         
other tests
X         
Your progress graph for this problem

how to  improve my approach, results and design of this challenge. How do i make a graphical venn or flow chart or some other relevant diagram to design it before writing code to decide best strategy?
 Please advise
0
Hi All,

When our Outlook 2010 users log in they are greeted with a certificate error.

Outlook Certificate Error
Any idea how I can get rid of it.  I'm comfortable deploying certificates via group policy (if that helps)


Many thanks
D
0
Hi,
I am trying below challenge

http://codingbat.com/prob/p100962

I tried as  below
public boolean specialEleven(int n) {

if(Integer.mod((n%11)==0))
return true;

else
return false;
  
}

Open in new window


I am getting below error


Compile problems:


Error:      if(Integer.mod((n%11)==0))
                 ^^^
The method mod(boolean) is undefined for the type Integer



please advise
0
Hi,

I am working on below challenge
http://codingbat.com/prob/p137365

i worote as below
public boolean in1To10(int n, boolean outsideMode) {

if(n<=10&&n>=1){

return true;
}

else if(n<=1&&outsideMode==true){

return true;
}


else if(n>=10&&outsideMode==true){

return true;
}


  else 
  return false;
}

Open in new window


i am failig one test as below
Expected      Run            
in1To10(5, false) → true      true      OK         
in1To10(11, false) → false      false      OK         
in1To10(11, true) → true      true      OK         
in1To10(10, false) → true      true      OK         
in1To10(10, true) → true      true      OK         
in1To10(9, false) → true      true      OK         
in1To10(9, true) → false      true      X         
in1To10(1, false) → true      true      OK         
in1To10(1, true) → true      true      OK         
in1To10(0, false) → false      false      OK         
in1To10(0, true) → true      true      OK         
in1To10(-1, false) → false      false      OK         
other tests

how to fix that and improve my approach and design of this challenge. How do i make a graphical venn or ascii diagram to proceed further. Please advise
0
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LVL 8
Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

I am confused by the appropriate use of gender-specific object pronouns in English.  

I am writing an article and and am having trouble with this line:
Has your child done something that you appropriate? Let _______ know!

Open in new window

What should go in the blank?  

I cannot use "him" because the child might be a girl.  I cannot use "her" because the child might be a boy.  I cannot use "them" because the line is referring to a single person.    

English a confusing language, at least for me.
0
Hello,  This question may be a long shout, yet allow me to ask for your ideas and calculations.  It's for a worthy cause, so i hope you will not object to the question.  It is for www.rockymountaincfc.org/
This question is a fun question, do not spend very much time with it.
I'm setting up a fund raising project.  My objective is to raise at least $250.00, with a $50.00 prize.  
The attached Excel file has 30 clues which I would sell at $1.00 per clue.  I would at minimum get 50 employees to buy some clues.  At minimum each person will buy 1 clue, which is not enough to meet my goal.
50 employees would have to buy 6 clues maximum.  And the fewer the employees, the more they would have to buy.
And the more employees, the fewer each will need to buy.  At a 100, each need to buy 3.
Could you come up with a graph that would show the statistics?
Also, this is will be the way I will carry out the fund raiser. I will be hiding some figurines.  Each figurine will have a clue indicating its location. Each clue will have a multiplier (X1-X10).  Therefore, there will be 300 clues.  I will have these 300 clues in a box from which each buyer will pick the number of clues they purchase.  Whoever gets the highest multiple and finds the figurine from the clue will win.  If there is a tie, then I will have them draw the highest number from a hat, to pick the winner.  The prize I just learned is worth $60.00, so I would need at least 60 employees to buy a ticket.
From what I have …
0
hi there, I wonder if I can pick some clever brains on what i guess is a simple maths/physics problem.

I am considering to build a simple cantilever bed, such that the bed appears to be floating because the legs will be recessed much like on many tables.

The question is how much can i safely recess the legs so that the bed does not tip if say 200kg weight is applied at the edge.

Attached is a sketch.
very crude sketchThe variables are:
W = the weight of the bed
a = the distance the support is recessed from the bed's edge (just consider the bed width for now)
y = the height of the bed (centre of weight height?)
X =  the maximum weight that can be applied at the edge before the bed tips
 
The constants are: the bed is king size, so 150cm x 200cm. On the sketch, b = the width of the platform support, so 2a + b = 150cm

I googled some physics homework about moments so made a simple calculation shown on the sketch. I have assumed the force due to the weight of the bed is as if applied to the centre, but not sure about this. If it is then I think Xa = Wb/2 so for example a 40kg bed (including mattress) with legs recessed 20cm would take a maximum weight of 110kg at the long edge. Do you think this is correct? I have not allowed for y, the height, though perhaps for low heights relative to width this is negligible?

Thanks for your help!
0
I want to count  the number of 15 digit serieses that have no exactly 2 adjacent zeros.
example for an allowed series( to be counted):
010101010101011
or
111111111111111
or
000000000000000
exampled for an allowed ones(not to be counted):
001111111111111
or
111111111111100
or
111010100011001
their number should be 1597
Only need to know how to calculate this?
0
I'm stuck on a sudoku puzzle - see picture - can someone explain some possible moves please? Note I don't just want "top left is 7" sort of answer, I'd like to understand a strategy for solving this problem. Thanks!
2015-04-14-07.15.27.png
0
I'm stuck on this sudoku - see picture.

Please can someone explain a strategy to make my next move?
0

Puzzles / Riddles

2K

Solutions

2

Articles & Videos

3K

Contributors

Puzzles and riddles are statements and questions framed such that they require ingenuity and imagination to resolve. Most are mathematical conundrums, but can also include the arcane, trivial or simply funny.

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