Question

If X = {a, b, c, d} and Y = {f, b, d, g}, find
(i) X - Y
(ii) Y - X
(iii) X $\cap$ Y

Answer 1

(i) X - Y = {a, c}
(ii) Y - X = {f, g}
(iii) X $\cap$ Y = {b, d}