A = {x e N / x es divisor de 12},B = {x e N / x es divisor de 18} y C = {x e N / x e s divisor de 16}?
A = {x e N / x es divisor de 12}, B = {x e N / x es divisor de 18} y C = {x e N / x e s divisor de 16}. Hallar : a) (A - B) n (B - C) b) (A - B) u (B - C).