SOLUTION: How many ways are there to roll a sum divisible by three on two dice?

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Question 1167293: How many ways are there to roll a sum divisible by three on two dice?
Answer by ikleyn(52884) About Me  (Show Source):
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How many ways are there to roll a sum divisible by three on two dice?
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            Let's list all the ways. 


1 + 2 = 3,

1 + 5 = 6,


2 + 1 = 3,

2 + 4 = 6,


3 + 3 = 6,

3 + 6 = 9,


4 + 2 = 6,

4 + 5 = 9,


5 + 1 = 6, 

5 + 4 = 9,


6 + 3 = 9,

6 + 6 = 12.


In all, there are 12 ways.

Solved.