Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Sum of a die

  1. Oct 21, 2007 #1
    Hi,

    I've looking in the internet but I can't find a straight answer.

    The problem is this:

    Suppose we have a 3-side die (faces marked 0, 1, and 2).

    Are there general formulas to answer questions such as:

    a) "After throwing the die 100 times, get the probability of the sum being 120"?
    b) "After throwing the die 100 times, get the probability of the sum being greater or equal to 120"?

    Any help is appreciated.


    P.S. This is not homework, I'm too old to be a student ;-)
     
  2. jcsd
  3. Oct 21, 2007 #2

    EnumaElish

    User Avatar
    Science Advisor
    Homework Helper

  4. Oct 21, 2007 #3
    I saw the message and he/she doesn't have a complete answer.
     
  5. Oct 21, 2007 #4

    EnumaElish

    User Avatar
    Science Advisor
    Homework Helper

    Neither do I. What I can tell you is, "yes, there are such general formulas."
     
  6. Oct 21, 2007 #5
    Yeah, I also found some formulas in the wiki http://en.wikipedia.org/wiki/Dice#Probability. However, I thought the problem were easier and with a nice formula like the binomial distribution.
     
    Last edited: Oct 22, 2007
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?