Question

1. 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}
{ }

2. Find A 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}
{1, 4, 7, 11}
{−2, −1, 1, 2, 3, 4, 5, 6}
{ }

3. Find B D.
B: {−2, −1, 1, 4, 7, 12}
D: {numbers divisible by 3 from 1 to 15}

{12}
{−2, −1, 1, 3, 4, 7, 12}
{−2, −1, 1, 3, 4, 6, 7, 9, 12, 15}
{ }

Answer 1

Is it \( A \cap B\) or \(A\cup B\)?

Answer 2

@swissgirl 1. is the second one (Sorry dunno how to put the signs)
2. is the first one
and 3. is the second one but B D not A B

Answer 3

Ok so \( A \cup B\) is all the elements in A and in B but keep in mind no doubles
So what wld the set be?

Answer 4

What do you mean? I'm sorry I'm new to this kind of math

Answer 5

Ok for starters {...} These brackets refer to a set. And anything within these brackets are elements
A: {2, 4, 6, 8, 10, 12}
So this set is called set A and the elements in this set is 2,4,6,8,10 and 12
So \( A \cup B\) means all the elements in A and B

Answer 6

Oh okay, now I understand.

Answer 7

Ok so what wld the first answer be?

Answer 8

{−2, −1, 2, 4, 6, 7, 8, 10, 11, 12} ?

Answer 9

Yup :)

Answer 10

okay what about the second and third questions?

Answer 11

\(A \cap B\) means elements which are in both A and B

Answer 12

oh okay I get it now thank you :)

Answer 13

Ok so what is the answer?

Answer 14

{1, 4, 7, 11}

Answer 15

Yes :)

Answer 16

Can you do the rest?

Answer 17

Yeah, I already did it all on my homework, and it got graded already :)

Answer 18

YAYYYYY :)

Answer 19

I got two wrong but it's okay, cause they were different questions :) THANKS

Answer 20

awwww that sucks :(

Answer 21

yeah it does but oh well i'll get over it

Answer 22

hahahhah i hope so :)

Answer 23

lol