R = {(x, y): y = x + 5, x is a natural number less than 4, x, y ∈ N}

The natural numbers less than 4 are 1, 2, and 3.

∴ R = {(1, 6), (2, 7), (3, 8)} The domain of R is the set of all first elements of the ordered pairs in the relation.

∴ Domain of R = {1, 2, 3} The range of R is the set of all second elements of the ordered pairs in the relation.

∴ Range of R = {6, 7, 8}