D. If U = {a, b, c, d, e, f, g, h, i, j, k}, A ={a, b, c, d, e}, B = {b, c, d, e}, C = {f. g. h}, and D = {a, e, g. i} List the elements of the following sets.

41.A ? B = {b, c, d, e}

42. A' U D = {a, e, f, g, h, i, j, k}

43. A ? U= _________________________________________________________

44. (C U B)' = ________________________________________________________

45. (D ? ) U A = _____________________________________________________

46. (A ~ B) ? C = ______________________________________________________

47. (A ? C) ~ B = ______________________________________________________

48. (A U D)' ~ (B ? C)' = ________________________________________________________

49. (B' ? C') U (D ~ A') = ________________________________________________________

D. If U = {a, b, c, d, e, f, g, h, i, j, k), A ={a, b, c, d, e), B = {b, c, d, e), C = {f. g. h}, and D = {a, e, g. i) List the elements of the following sets. 41. An B = {b, c, d, e } 42. A' U D = {a, e, f, g, h, u j, k} 43. A QU = 44. (C U B)' = 45. (D n O) UA = 46. (A ~ B) n C = 47. (An C) ~ B = 48. (AUD)' ~ (BAC )' = 49. (B'n C') U (D ~ A') = 50. (B O D) n (A ~ C) = NOTE: @ - symbol for symmetric difference)