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  1. #1
    Dave70 is offline Very Common
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    Default Probability rolling 9 on first roll of dice

    Whats the probabilty of rolling a 9 with a pair of 6 sided dice on the first roll?

  2. #2
    blargerer is offline Common
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    Default Re: Probability rolling 9 on first roll of dice

    Quote Originally Posted by Dave70 View Post
    Whats the probabilty of rolling a 9 with a pair of 6 sided dice on the first roll?
    1/9 or about 11%.
    there are 4 combinations that add up to 9, 6/3, 5/4, 4/5, 3/6. out of a total of 36 (6x6) so 4/36 = 1/9.

  3. #3
    Dave70 is offline Very Common
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    Default Re: Probability rolling 9 on first roll of dice

    what about rolling a 7?

  4. #4
    klicker's Avatar
    klicker is offline Super Moderator
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    Default Re: Probability rolling 9 on first roll of dice

    16.67% - 1/6, 2/5, 3/4, 4/3, ,5/2 ,6/1, thats 6 combinations out of 36

    This page has some probability statistics for dice:

    2 Dice Rolls Probability/Statistics - Total

 

 

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