Probability of the number

Question

Maggie has two cube with one number on each side. Each cube is numbered from 1 to 6. Maggie rolls both number cubes at the same time. What is the probability that the total of the number facing up will equal 12?

Answer 1

the sample space is as follows...

 

 

        1  2  3  4  5  6

     ------------------

1   l  2  3  4  5  6  7

 

2   l  3  4  5  6  7  8

 

3   l  4  5  6  7  8  9

 

4   l  5  6  7  8  9  10

 

5   l  6  7  8  9 10 11

 

6   l  7  8  9  10 11 12

 

there are 36 possible outcomes and there is only one 12

probability of getting a 12 is 1/36