Question

C = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} and D = {numbers divisible by 6 from 1 to 12}, what is C ∩ D?

{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
{6}
{ }
{6, 12}
6. [3.02]

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

{red, orange, yellow, green, blue, indigo, violet}
{red, orange, yellow}
{all colors except red, orange, yellow }
{ }