Question

If X = {a, b, c, d} and Y = {f, b, d, g}, find 

(i) X – Y 

(ii) Y – X 

(iii) X ∩ Y 

Answer 1

(i) X – Y = {a, c} 

(ii) Y – X = {f, g} 

(iii) X ∩ Y = {b, d}