How to perform Double Sum with the help of loops?

I have a following question, which is to be solved with loops : i+j, where m = 1, n = 12, o = 3, p = 7 and i+j = 3 is.

Answer 1

[Cris LaPierre]

See the nested for loop example on the for documentation page.

BTW, if i+j=3, then there is no double summing necessary, right? You already know the result.

Instead, the value of i is incrementing from m to n, and the value of j is incrementing from o to p, and i+j is the operation to be calculated for all values of i and j.