perplexus.info :: Just Math : Factorial-Square Sum

Factorial-Square Sum (Posted on 2014-03-23)

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: ( Back to comment list | You must be logged in to post comments.)

just by looking at it

| Comment 1 of 7

(2,2,0)

(3,2,2)

(2,3,2)

Posted by Ady TZIDON on 2014-03-23 09:34:14

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (5)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info