
Re: how many ways to pick two teams of 10 out of a group of 20 people
Posted:
Feb 5, 2013 8:04 AM


On 02/05/2013 02:45 AM, G Patel wrote: > Is it 20 choose 10 or do I have to divide by 2? > > >
Team A: C(20, 10) Team B: 1: 10 left.
C(20, 10) ways to chose the ordered pair (Team A, Team B).
If the teams are unordered, just two complemetary subsets, {X, Y} with X=Y=10, C(20,10)/2 ways of constructing {X, Y} .
David Bernier
 dracut:/# lvm vgcfgrestore File descriptor 9 (/.console_lock) leaked on lvm invocation. Parent PID 993: sh Please specify a *single* volume group to restore.

