Question

What is the union of the following sets?

G = {12, 14, 16, 18}
H = {13, 15, 17, 18}

A. {18}
B. {12, 13, 14, 15, 16, 17}
C. { }
D. {12, 13, 14, 15, 16, 17, 18}

Answer 1

The answer is d....
I hope this helps

Answer 2

Answer: D. {12, 13, 14, 15, 16, 17, 18}

Explanation:

The union of two sets A and B is the set of elements which are in A, in B, or in both A and B, without repetition.

In this case, the union of the sets G and H will be the set of elements in G= {12, 14, 16, 18} and then the set of elements in H= {13, 15, 17, 18}, excluding those that already were in G, which in this case is the number 18.

Then:

G ∪ H={12, 13, 14, 15, 16, 17, 18}