20190402, 15:14  #1 
Aug 2002
2^{3}×1,069 Posts 
April 2019

20190403, 13:45  #2 
"Ben"
Feb 2007
7×13×41 Posts 
Easy to find solutions. I wonder what "elegant" looks like for this puzzle; mine surely are not.

20190403, 14:35  #3 
"Ben"
Feb 2007
3731_{10} Posts 
Found a solution for 4x4

20190403, 14:50  #4 
"Rashid Naimi"
Oct 2015
Remote to Here/There
2,333 Posts 

20190403, 14:59  #5 
"Ben"
Feb 2007
E93_{16} Posts 

20190403, 15:13  #6 
"Rashid Naimi"
Oct 2015
Remote to Here/There
2,333 Posts 
Well shouldn't spoil the challenge at this point but there is a simple algorithm as a factor of number of rows as is obvious with the great number of solutions submitted this early.

20190403, 16:46  #7 
"Luke Richards"
Jan 2018
Birmingham, UK
2^{5}×3^{2} Posts 
Thanks for sharing. My year 10 class (aged 1415) had great fun with this today.

20190403, 17:55  #8 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
5^{2}×211 Posts 
Yes quite easy indeed.
...

20190407, 20:36  #9 
"Rashid Naimi"
Oct 2015
Remote to Here/There
2,333 Posts 
Well, I did a 101x101 matrix because I found it interesting to write a code to generate a code to solve the large matrix. Otherwise it would have been prohibitively too much work to type the code to check all the 101+101+2 averages.
ETA Again, I wished someone would write a "foreach" style function for the PARIGP vectors/matrices or add a few decent numeric examples to the forvec loop documentation. Last fiddled with by a1call on 20190407 at 20:59 
20190408, 15:01  #10 
Romulan Interpreter
"name field"
Jun 2011
Thailand
10,273 Posts 

20190409, 13:35  #11 
"Ben"
Feb 2007
7223_{8} Posts 

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
January 2019  Xyzzy  Puzzles  74  20190409 13:34 
March 2019  Xyzzy  Puzzles  6  20190404 16:32 
February 2019  Xyzzy  Puzzles  17  20190307 21:05 
2019 Coding Challenge  miroslavkures  Number Theory Discussion Group  2  20181227 08:59 