Question

If A = {relish, onion, cheese} and B = {chili, mustard, cheese}, what is A union B?

{chili, mustard}

{cheese}

{ }

{relish, onion, cheese, chili, mustard }

Answer 1

It will be {relish,onion,cheese, chili, mustard}

Answer 2

The union u can think of as everything inside of A and B but don't repeat writing the cheese because most examiners or correctors or watever u call them most likely won't accept it.