Question

What is the probability of getting a 10 or a 11 when a pair of dice are rolled?

How to do

Answer 1

There are 36 possible rolls (6*6).

On the first dice, a 4, 5 or 6 will give you a roll that can provide a valid solution.

So, here is a list of rolls that are valid:

    D1    D2    Result
    ------------------
    4     6     10
    5     6     11
    5     5     10
    6     4     10
    6     5     11

Total of 5 solutions from 36.

(5/36)*100 = 13.9%

or

5/36 = 10/72 and 10/72 = 1/7.2

If you were a betting man, you would offer someone 1:6 they can’t throw this number, or 1:8 that you can throw the number 🙂