perplexus.info :: Just Math : Product of 100 factorials

Product of 100 factorials (Posted on 2017-09-07)

Show that (1!*2!*3!*4!* ... 100!)/50! is a square number.

No Solution Yet Submitted by Ady TZIDON

Rating: 3.5000 (2 votes)

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

re: when it works -- computer exploration please edit

| Comment 5 of 8 |

"that product divided by n/2" should be "that product divided by ( n/2)! .

Edited on September 8, 2017, 4:04 am

Posted by Ady TZIDON on 2017-09-08 04:03:40

Please log in:

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

Chatterbox:


perplexus dot info