Question

Which of the following sets represent A ∪ B?

https://media.glynlyon.com/g_geo_2012/6/img_geou6a_8.gif


{6, 12}
{2, 3, 4, 6, 8, 9, 10, 12}
{1, 5, 7, 11}
{2, 3, 4, 8, 9, 10}

Answer 1

list all things in A , then list all things in B, just don't repeat any

Answer 2

\(\{2,3,4,6,8,9,10,12\}\)