1) [5] Let the universal set be U = {1,2,3,...,15, 16, 17), R = {x EU|x = 5n, n€ Z},S = {x € U|x is prime}, and T = {x €

U| x = 3n+ 5, n € Z} . a) List the elements of R. b) List the elements of S. c) List the elements of T. d) List the elements of R n S. e) List the elements of Rº.