Results 1 to 3 of 3

Math Help - Rolling n dice

  1. #1
    Junior Member
    Joined
    Aug 2009
    Posts
    28

    Red face Rolling n dice

    (a) How many different outcomes are there from rolling n identical dice?
    (b) How many of these sequences contain at least one 6?

    I got 6^n for part(a) but I'm very muddled over the 2nd part of this question...
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,797
    Thanks
    1690
    Awards
    1
    Quote Originally Posted by DaRush19 View Post
    (a) How many different outcomes are there from rolling n identical dice?
    (b) How many of these sequences contain at least one 6?

    I got 6^n for part(a) ...CORRECT
    b) 6^n -5^n. WHY?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Aug 2009
    Posts
    28
    Because 5^n contains no 6's at all.

    Thanks!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Rolling Dice
    Posted in the Advanced Statistics Forum
    Replies: 5
    Last Post: June 18th 2010, 09:10 PM
  2. Replies: 0
    Last Post: December 29th 2009, 08:08 PM
  3. Rolling 3 dice
    Posted in the Statistics Forum
    Replies: 1
    Last Post: May 10th 2009, 04:07 AM
  4. Re-Rolling Dice
    Posted in the Statistics Forum
    Replies: 4
    Last Post: December 21st 2008, 10:15 AM
  5. Rolling 4 dice
    Posted in the Statistics Forum
    Replies: 4
    Last Post: March 14th 2007, 01:35 PM

Search Tags


/mathhelpforum @mathhelpforum