Hi, Let U = {q, r, s, t, u, v, w, x, y, z} A = {q, s, u, w, y} B = {q, s, y, z} C = {v, w, x, y, z}. (B ∩ C) = {y,z} A ∪ (B ∩ C) = {q, s, u, w, y,z}