Question

Find A B.
A: {2, 4, 6, 8, 10, 12}
B: {−2, −1, 2, 4, 7, 11}

{2, 4}
{−2, −1, 2, 4, 6, 7, 8, 10, 11, 12}
{−2, −1, 1, 2, 4, 6, 8, 10}
{ }

Answer 1

A U B

Answer 2

U = everything in A and everything in B

Answer 3

so everything they have in common?

Answer 4

In set theory, a union is defined as every object in A, every object in B. http://www.rapidtables.com/math/symbols/Set_Symbols.htm

Answer 5

No not everything they have in common.

Answer 6

No, everything that is is both A and B

Answer 7

So your answer would be −2, −1, 2, 4, 6, 7, 8, 10, 11, 12 because it includes everything in A and everything in B