Question

If A = {red, orange, yellow} and B = {red, orange, yellow, green, blue, indigo, violet}, what is A union B?
Answer

{all colors except red, orange, yellow }

{ }

{red, orange, yellow}

{red, orange, yellow, green, blue, indigo, violet}

Answer 1

{red, orange, yellow, green, blue, indigo, violet}

The union of two sets is comprised of the elements in either one or both of the sets.