Psycho-Babble Social | for general support | Framed
This thread | Show all | Post follow-up | Start new thread | List of forums | Search | FAQ

A math puzzle

Posted by Alexus on September 6, 2006, at 1:37:34

For the mathematically inclined.

If there is a dx category (BPD) with 9 symptoms...
And you need to have 5 or 6 or 7 or 8 or 9 of those symptoms to meet criteria for the dx...
Then how many different ways are there to meet the criteria for the dx?

You could have...
1+2+3+4+5
or
1+2+3+4+5+6
or
2+3+4+5+6
or
1+3+5+7+9

I'm sure you get the general idea.
But...
There must be a systematic way...

(Someone computed 54 ways but I don't know how and I don't know whether that is true)


Share
Tweet  

Thread

 

Post a new follow-up

Your message only Include above post


Notify the administrators

They will then review this post with the posting guidelines in mind.

To contact them about something other than this post, please use this form instead.

 

Start a new thread

 
Google
dr-bob.org www
Search options and examples
[amazon] for
in

This thread | Show all | Post follow-up | Start new thread | FAQ
Psycho-Babble Social | Framed

poster:Alexus thread:683578
URL: http://www.dr-bob.org/babble/social/20060901/msgs/683578.html