Two standard dice are rolled together. What is the probability of rolling a sum less than 7 or a sum divisible by 5?

Sum less than: 7 (1,1), (1,2), (1,3), (1,4), (1,5), (2,1), (2,2), (2,3), (2,4), (2,5), (3,1), (3,2), (3,3), (3,4), (3,5), (,4,1), (4,2), & (5,1)

Sum divisible by 5 (1,4), (2,3), (3,2), (4,1)

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.