Results 1 to 2 of 2
Like Tree1Thanks
  • 1 Post By Plato

Math Help - Probability

  1. #1
    Junior Member Greymalkin's Avatar
    Joined
    Jun 2012
    From
    Montreal
    Posts
    74
    Thanks
    1

    Probability

    Not sure if this is precalc but its at the end of my trig book anyways:
    Probability-trig2.png

    I get : \frac {_7 C_4 *  _5C_3 *_1_0 C_1}{_2_2 C_8} \Rightarrow \frac {35*10*10}{58198140}

    Which does not equal the book answer of \frac {350}{31977}
    What is my error?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,617
    Thanks
    1581
    Awards
    1

    Re: Probability

    Quote Originally Posted by Greymalkin View Post
    Not sure if this is precalc but its at the end of my trig book anyways:
    Click image for larger version. 

Name:	trig2.png 
Views:	5 
Size:	13.8 KB 
ID:	24941
    I get : \frac {_7 C_4 *  _5C_3 *_1_0 C_1}{_2_2 C_8} \Rightarrow \frac {35*10*10}{58198140}
    Which does not equal the book answer of \frac {350}{31977}
    What is my error?
    \binom{7}{4}\binom{5}{3}\binom{10}{1}=3500

    \binom{22}{8}=319770.

    So the book is correct.
    Thanks from Greymalkin
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: July 11th 2012, 05:42 AM
  2. Replies: 10
    Last Post: January 21st 2011, 11:47 AM
  3. Replies: 3
    Last Post: May 29th 2010, 07:29 AM
  4. Replies: 1
    Last Post: February 18th 2010, 01:54 AM
  5. Replies: 3
    Last Post: December 15th 2009, 06:30 AM

Search Tags


/mathhelpforum @mathhelpforum