# Count me out!

Discrete Mathematics Level pending

There exist $$p$$ non-negative (0 included) integer solutions to the equation $$a + b + c = 3$$, $$q$$ solutions to $$d + e + f + g = 5$$ and $$r$$ solutions to $$h + i + j + k + l = 7$$. What is $$p + q + r?$$.

×