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: ( 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

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