Results 1 to 2 of 2

Math Help - dice question

  1. #1
    Newbie
    Joined
    Mar 2009
    Posts
    24

    dice question

    in a dice game, the player independently rolls a fair red die and a fair green die. the player wins if and only if red die shows 1,2 or 3 or if the total on the 2 dice is 11 . Prob(win)=?

    In the solution, it says there are 6 ways to get a 1 on the red die, same for 2 or 3...I don't understand. I think it should only have 1 way to get 1 or 2 or 3 because the prob ( #=1) =1/6

    Anyone could explain it to me?Thanks!!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    May 2009
    Posts
    4
    Only answer is the book's solution is wrong.

    P(red rolls 1,2,3 or sum=11) = P(red rolls 1,2,3)+P(sum=11)-P(red rolls 1,2,3 and sum=11) = 3/6+2/36-0= 20/36 = 5/9
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. 2 dice question
    Posted in the Statistics Forum
    Replies: 1
    Last Post: July 18th 2011, 05:08 AM
  2. Another dice question!
    Posted in the Statistics Forum
    Replies: 2
    Last Post: May 9th 2010, 07:19 AM
  3. Dice Question
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: October 5th 2009, 02:34 PM
  4. Dice probability question
    Posted in the Discrete Math Forum
    Replies: 2
    Last Post: April 12th 2008, 09:02 AM
  5. Dice question
    Posted in the Statistics Forum
    Replies: 3
    Last Post: February 9th 2007, 12:37 PM

Search Tags


/mathhelpforum @mathhelpforum