HP Forums / HP Calculators (and very old HP Computers) / HP Prime v / Combinations bidirectional

Post Reply 
Combinations bidirectional
07-14-2020, 02:55 PM
Post: #1
Tonig00 Offline
Member
 		Posts: 56
Joined: May 2016
Combinations bidirectional
Helo
COMB(n,r) gives n!/(r!(n-r)!)
But if I put
2*n!/(r!(n-r)!) how can I get
2*COMB(n,r)
Is it possible?

Thanks very much
Find all posts by this user
Quote this message in a reply
07-17-2020, 12:33 AM
Post: #2
CyberAngel Offline
Member
 		Posts: 299
Joined: Jul 2018
RE: Combinations bidirectional
(07-14-2020 02:55 PM)Tonig00 Wrote:  Helo
COMB(n,r) gives n!/(r!(n-r)!)
But if I put
2*n!/(r!(n-r)!) how can I get
2*COMB(n,r)
Is it possible?

Thanks very much

No
- -
VPN
Find all posts by this user
Quote this message in a reply
Post Reply 




User(s) browsing this thread: 3 Guest(s)

Contact Us | The Museum of HP Calculators | Return to Top | Return to Content | Lite (Archive) Mode | RSS Syndication