Results 1 to 2 of 2

Math Help - Easy probability that is not so easy for me!

  1. #1
    Junior Member
    Joined
    Feb 2009
    From
    Fiery pits of confusion
    Posts
    36

    Easy probability that is not so easy for me!

    The probability of randomly taking 2 blue notebooks from a shelf which has 4 blue and 3 black notebooks.
    My work:
    (4/7)*(3/6)=2/7
    The back of the book says something different though!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,693
    Thanks
    1466
    Quote Originally Posted by puzzledwithpolynomials View Post
    The probability of randomly taking 2 blue notebooks from a shelf which has 4 blue and 3 black notebooks.
    My work:
    (4/7)*(3/6)=2/7
    The back of the book says something different though!
    2/7 looks good to me. What does the book say?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: February 9th 2013, 08:59 PM
  2. easy probability
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: November 17th 2010, 02:40 PM
  3. Easy Probability
    Posted in the Statistics Forum
    Replies: 4
    Last Post: September 10th 2010, 05:55 PM
  4. Easy Probability
    Posted in the Statistics Forum
    Replies: 1
    Last Post: October 26th 2009, 03:33 AM
  5. Seemingly easy question... too easy.
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: August 23rd 2009, 09:36 PM

Search Tags


/mathhelpforum @mathhelpforum