March 29th, 2012, 10:36 AM  #1 
Senior Member Joined: Feb 2012 Posts: 628 Thanks: 1  7x7 magic square
Just for fun, I made a magic square: The sum of all the rows, columns, and diagonals is 224. If anyone is interested, I can explain how to make a magic square for any prime . 
March 31st, 2012, 12:42 AM  #2 
Joined: Mar 2012 Posts: 5 Thanks: 0  Re: 7x7 magic square
It kind of reminds me of soduko. How did you do it? 
March 31st, 2012, 09:25 AM  #3 
Math Team Joined: Dec 2006 From: Lexington, MA Posts: 3,266 Thanks: 403  Re: 7x7 magic square Here is another . . . [color=beige]. . [/color] The magic sum is 175. 
April 1st, 2012, 09:35 AM  #4  
Senior Member Joined: Feb 2012 Posts: 628 Thanks: 1  Re: 7x7 magic square Quote:
Start with the top row, which will be all of the numbers 1 to n in order. Now the row below will be the same numbers shifted two places to the right (you can shift any number which is relatively prime to n), and each successive row you will apply the same shift to the previous row. Here is the example for n = 5: Now make another Latin square B in the same way, except shifting by a different amount (3 instead of 2, for example): Finally, to create the magic square C, each cell will contain the number , where represents the entry in the ith row and the jth column of square K. This will work as long as both shifts are relatively prime to n (in the example 2 and 3 are both relatively prime to 5), and the difference between the shift numbers is relatively prime to n (in the example the difference is 1, which is relatively prime to 5).  

Tags 
7x7, magic, square 
Search tags for this page 
7x7 magic square,magic square 7x7,7x7 magic square solver,solve 7x7 nested magic square,Magic squares 7x7,magic square solver 7x7,magic square 7x7 solution,how to solve nested magic squares,solving nested magic squares,solution magic 7x7 sum 175,magic squares 7x7 solution,7x7 latin square,7x7 algebraic magic square,7x7 magic squares,how to make a 7x7 magic square
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
magic....WHAT?  Shamieh  Algebra  3  September 10th, 2013 02:08 AM 
A very special magic square  soroban  New Users  1  May 16th, 2012 05:11 PM 
Magic square of s.  lnrbm  Number Theory  2  February 26th, 2011 07:30 AM 
Magic Box  Need help  raustin6  Algebra  1  April 18th, 2010 11:06 AM 
A different magic square  monicao  Number Theory  4  October 12th, 2007 01:16 AM 