Random variables (statistics and probably)

I'm a computer engineer. It is always fun to learn from Sal :)
I liked the concept of random variables and am planning to try to make some programs with it.
What I'm planing to have in a variable is a table of values representing the distribution.
(The mean, the variance, a probability... Are to calculate at the end).
The question is : how to add,multiply... two tables to obtain a new table.

(Concord a tsp solver : rated an algorithm based on probably as best algorithm before checking optimality)