Adding/summing two arrays

Question

I\'ve encountered a purely hypothetical problem which feels like it has an easy solution if I find the right linq method...

I have two arrays of ints and I know they are

Answer 1

Zip it :)

var a = new int[] {1,2,3 };
var b = new int[] {4,5,6 };
a.Zip(b, (x, y) => x + y)