No subject

[murthy amarnath]

 To all,
Can some one solve this problem. 

There are 15 males and 15 females. They are to be
arranged in a circle choosing a predecided starting
point. Go on choosing every 9'th person and take
him/her out of the circle instantly. Continue doing so
till 15 persons are out of the circle. 
The question is how to arrange them so that only
(all)females are out.

 
Generalize. 
Let there be p  black  balls , q blue balls and  r 
red balls. How to arrange so that   all black balls
are removed if one goes on removing every  k'th ball
as  above.
thanks
regards
amarnath

__________________________________________________
Do you Yahoo!?
Yahoo! Web Hosting - Let the expert host your site
http://webhosting.yahoo.com