+ Reply to Thread
Results 1 to 2 of 2

Thread: Counting Question

  1. #1
    Points: 4, Level: 1
    Level completed: 7%, Points required for next Level: 46

    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Counting Question




    Question: If I had X number of train cars and I wanted to know the probability of having Y or more people in a car when I have N total of people. How would I go about solving this?

    I thought that this would be a good example of a SUM from k = Y -> N of combination(N k) ; however, my number does not seem to make sense. I have been stuck on this problem for a while now and I am not sure what the correct path is to solving it. Any and all advice would be helpful in understanding and solve this type of problem.

    Thanks in advance!

  2. #2
    TS Contributor
    Points: 22,410, Level: 93
    Level completed: 6%, Points required for next Level: 940

    Posts
    3,020
    Thanks
    12
    Thanked 565 Times in 537 Posts

    Re: Counting Question


    http://en.wikipedia.org/wiki/Stars_a...mbinatorics%29

    You may first take a look at the above link. Also note that requiring a specific car is different from at least one of the car having Y or more people.
    Last edited by Dason; 09-30-2013 at 09:09 AM.

+ Reply to Thread

           




Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats