(i) \\\\(\\{(2, 1), (5, 1), (8, 1), (11, 1), (14, 1), (17, 1)\\}\\\\)It is a function as every input has a single output.So, \\\\(2, 5, 8, 11, 14\\\\) and \\\\(17\\\\) are the elements of the domain of the given relation. Here domain \\\\(= \\{2, 5, 8, 11, 14, 17\\}\\\\) and range \\\\( = \\{1\\}\\\\)(ii) \\\\(\\{(2, 1), (4, 2), (6, 3), (8, 4), (10, 5) (12, 6), (14, 7)\\}\\\\)It is a function as every input has a single output.So, \\\\(2, 4, 6, 8, 10, 12\\\\) and \\\\(14\\\\) are the elements of the domain of the given relation. Here domain \\\\(= \\{2, 4, 6, 8, 10, 12, 14\\}\\\\) and range \\\\(= \\{1, 2, 3, 4, 5, 6, 7\\}\\\\)(iii) \\\\(\\{(1, 3), (1, 5), (2, 5)\\}\\\\) Since the element \\\\(1\\\\) corresponds to two different images i.e., \\\\(3\\\\) and \\\\(5\\\\) . So, this relation is not a function.