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.

See The Solution Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Some analytical conclusions	Steve Herman	2014-03-23 16:15:55
re(2): more	Ady TZIDON	2014-03-23 13:18:27
re: more	Charlie	2014-03-23 10:27:33
computer exploration	Charlie	2014-03-23 10:19:54
more	Ady TZIDON	2014-03-23 09:50:56
more	Ady TZIDON	2014-03-23 09:50:51
just by looking at it	Ady TZIDON	2014-03-23 09:34:14

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