Question

Find the union of each of the following pairs of sets.
(i) A = {2, 3, 5, 6, 7}, B = {4, 5, 7, 8}
(ii) C = {a, e, i, o, u} D = {a, b, c, d}
(iii) E = {x|x $\in$ N and x is a divisor of 12}
F = {y|y $\in$ N and y is a divisor of 18}

Answer 1

(i) A = {2,3,5,6,7} and B = {4,5,7,8}
$\therefore$A$\cup$B = {2,3,4,5,6,7,8}

(ii) C = {a,e,i,o,u} and D = {a,b,c,d}
$\therefore$C$\cup$D = {a,b,c,d,e,i,o,u}

(iii) E = {1,2,3,4,6,12} and F = {1,2,3,6,9,18}
$\therefore$E$\cup$F = {1,2,3,4,6,9,12,18}