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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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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

554 views
Free Tool: SSL Checker
Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

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.

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 …

21,601 views

What is the maximum distance of x in order to limit the slope change to less than .15 degrees?

578 views

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 …

48131 views

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…

24140 views

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. …

894 views

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.

15118 views

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!

684 views

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 …

273 views

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 …

779 views
Free Tool: IP Lookup
Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

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.

Hi,
I am working on below challenge
http://codingbat.com/prob/p136594
I tried my code as below
(CODE)
I am getting below result
Expected      Run            
xyzThere("abcxyz") → true      true      OK         

153179 views

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 …

23142 views

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 …

3107 views

Hi All,

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



Any idea how I can get rid of it.  I'm comfortable deploying certificates via group policy (if that …

788 views

How can i solve this equation method using the Gauss method?? I have no clue :S

x  -  y + 2z +   t = 0
       y -    z + 2t = 0
2x      + z         =  0


???

5353 views

Hi,
I am working on below challenge
http://codingbat.com/prob/p126880
I tried my code as below
(CODE)
I am getting below result
Expected      Run            
endOther("Hiabc", "abc") → true      false      X         

4117 views

Hi,

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

i worote as below
(CODE)

i am failig one test as below
Expected      Run            
in1To10(5, false) → true      true      OK         

28245 views

Hi,
I am trying below challenge

http://codingbat.com/prob/p100962

I tried as  below
(CODE)

I am getting below error


Compile problems:


Error:      if(Integer.mod((n%11)==0))
               …

10161 views

Hello All,
I am wondering if anyone can recommend any online numerical aptitude test which could be used to help screen potential employees. I am looking for something where the actual math required …

1111 views
Free Tool: Port Scanner
Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

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.

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 …

13144 views

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 …

5158 views

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:(CODE)What should go in the blank?  

I …

7140 views

A regularly occurring astronomical event and a fame for crossings link two of my favourite drinks -  
A New World cocktail and an Old World beer. One more sophisticated, one more foolish.

Posting…

26170 views

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

10350 views

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 …

2184 views
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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.

Related Topics

  1. Math / Science
  2. Miscellaneous
  3. Algorithms
  4. Philosophy / Religion
  5. Computer Games
  6. Programming Languages-Other
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