Question

Find A union B.
A: {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
B: {−2, −1, 1, 4, 7, 11}

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

can someone explain this to me?

Answer 1

A union B is the set where you combine sets A and B into one big set

you also remove any duplicates you find

Answer 2

similar example

A = {1, 2, 3}
B = {3, 4, 5}

A union B = {1, 2, 3, 4, 5}

Answer 3

ohhh ok! so the answer for this one would be c?

Answer 4

look at choice C

Answer 5

notice how the number 3 is NOT in the set

but 3 is in the set A

Answer 6

so set one?

Answer 7

you mean the first answer choice?

Answer 8

yea

Answer 9

yes, that's the correct answer

Answer 10

thxs!

Answer 11

you're welcome