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

Home > Just Math
Factorial-Square Sum (Posted on 2014-03-23) Difficulty: 3 of 5
Determine all possible triplets (X,Y,Z) of positive integers that satisfy:

                          X!*Y! = X! + Y! + Z2

Prove that there are no others.

No Solution Yet Submitted by K Sengupta    
No Rating

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Some ThoughtsSome analytical conclusionsSteve Herman2014-03-23 16:15:55
re(2): moreAdy TZIDON2014-03-23 13:18:27
re: moreCharlie2014-03-23 10:27:33
Some Thoughtscomputer explorationCharlie2014-03-23 10:19:54
Hints/TipsmoreAdy TZIDON2014-03-23 09:50:56
Hints/TipsmoreAdy TZIDON2014-03-23 09:50:51
Hints/Tipsjust by looking at itAdy TZIDON2014-03-23 09:34:14
Please log in:
Remember me:
Sign up! | Forgot password

Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Copyright © 2002 - 2021 by Animus Pactum Consulting. All rights reserved. Privacy Information