3. (5 points) Use set builder notation to describe these sets. a) S1 = {1,2,4,8, 16,...) b) S2 = {2,5,8, 11, 14, ...) c) S3 = {1,4,9, 16, 25, ...) d) S4 = {a, b, c, d, e, f,..., z} e) S5 = {a,e,i,o,u} 4. (5 points) Describe these sets by listing all members in these sets: a) S6 = {x N|x > 01x S 20} b) Sz= {x S6|x is prime} c) Sg = {x Sylx is odd} d) Sg = Zn (Z+UZ) e) S10 = Son Sg