aku mau nanya ini caranya gmn yah tolong jelasin dengan benar dan tepat

a. T = {b, c, d, f, g, h, j, k, l, m, n, p, q, r, s, t, v, w, x, y, z}
b. U = {1, 2, 3, 4, 5, 6, 7, 8, 9}  c. V= {1, 3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,7            2,75,78,81,84,87,90,93,96,99 }
d. W = {11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, ....}

jadikan jawaban terbaik yoo