Archie rolls two number cubes, each with sides numbered 1 through 6. he finds the sum of the numbers on the tops of the cubes. whaf two sums have the probability?
a. 3 and 4
b. 5 and 9
c. 5 and 8
d. 10 and 12

The same probability*

Write firstly what results it's able to get and their sum:
123456
1   2    3      4    5    6     7
2   3    4      5    6    7     8
3   4    5      6    7    8      9
4   5    6      7    8    9    10
5   6    7      8    9    10  11
6  7    8      9    10    11  12

As you can see there are four options to get "5" and also four options to get "9".
So the B is proper answer.
Sum 5 and sum 9 have the same probability.

21/2 or 5/2