Answer:
1/9
Step-by-step explanation:
Probability is:
# of desired outcomes/# of total outcomes
First, we can find the number of total outcomes.
6*6=36
They are as follows:
(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)
(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)
(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)
(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)
(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)
(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)
This is where (here is the value of the first dice role, here is the value of the second dice roll)
Now, I am going to bold all the outcomes that add up to 9.
Notice that there are 4.
So there are 4 desired outcomes and 36 total outcomes.
4/36
Simplify
1/9
