Jump to content

Welcome to BrainDen.com - Brain Teasers Forum

Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account.
As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends.

Of course, you can also enjoy our collection of amazing optical illusions and cool math games.

If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top.
If you have a website, we would appreciate a little link to BrainDen.

Thanks and enjoy the Den :-)
Guest Message by DevFuse

- - - - -

Independence Events

Best Answer k-man, 19 July 2013 - 04:34 PM

Spoiler for looks like...

Go to the full post

  • Please log in to reply
1 reply to this topic



    Senior Member

  • Members
  • PipPipPipPip
  • 1837 posts
  • Gender:Female

Posted 19 July 2013 - 02:49 PM

Three sisters : Venus , Serena , and the well-hidden little Cathy, play one tennis opponent per week. The chances of each sister beating any unrelated player are 7/10, 8/10, and 9/10, respectively. The probabilities of any sister beating another are given in the table
/   v   s   c
v .0  .6  .7
s .4  .0  .9
c .3  .1  .0
(for example Venus beats Cathy 7/10 of the time).
Each week, one pair of sisters plays each other (at random) ; the third plays an outsider. In a 50-match season, which player is likely to win the most matches, and how many matches would each one expect to win, on the average?

  • 0

#2 k-man


    Senior Member

  • Members
  • PipPipPipPip
  • 537 posts
  • Gender:Male

Posted 19 July 2013 - 04:34 PM   Best Answer

Spoiler for looks like...

  • 0

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users