All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Numbers
Squaring a Square Grid (Posted on 2009-10-10) Difficulty: 3 of 5
Place 16 nonzero base ten digits in the cells of a 4x4 square grid, with each digit occurring in a cell exactly once. The digits can be considered as forming eight 4-digit numbers, read left to right and top to bottom, each of which is a perfect square. Since there are more than nine cells, there will be an obvious repetition of digits.

No Solution Yet Submitted by K Sengupta    
No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
re: All nonzero? | Comment 2 of 4 |
(In reply to All nonzero? by Jim Keneipp)

Are you taking "repetition of digits" to mean within a particular square number? I'm sure the "obvious" means that there's repetition among the 4x4 = 16 digits of the whole grid.

Or are you assuming that none of the 4-digit squares can repeat?

 

Edited on October 10, 2009, 3:26 pm
  Posted by Charlie on 2009-10-10 15:01:39

Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (1)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information