Question

let A= { b, d, e, f}. B={ c, d, g, h}, C={e , f, g, h} find: a)a-b, c-b, (a-b) u(b- a).​

Answer 1

Step-by-step explanation:

a-b = { b,e,f}

c-b = { e,f}

(a-b) U (b-a) = { b,e,f} U { c,g,h}

= { b,e,f,c,g,h}