(Q26).If A and B are two sets such that A ⊂ B then, what is A ∪ B?

Let us consider A ⊂ B

Set A = {1, 2, 3} and

Set B = {1, 2, 3, 4, 5}

Now A ∪ B = {1, 2, 3} ∪ {1, 2, 3, 4, 5}

= {, , , , }

=

∴ A ∪ B =