Is there a built in function in MathCAD prime that can create pair combinations of integers from two dissimilar length vectors filled with integers?
Mathcad has a random number generator, there has been a fair amount of discussion over the years about how random it really is.
I don't know of a built-in function that would do what you want; but using the random number generator to create random indices into each vector shouldn't be terribly difficult.
As Fred indicated, there isn't a built-in function, but it's easy to create one, if you trust the built-in random number generators:
I've take that both arrays are the same length, so they can be columns of the same matrix.
I'm also assuming that you want numbers from different rows...