Question

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

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

2.{1, 4, 7, 11}

3.{−2, −1, 1, 2, 3, 4, 5, 6}

4.{ }

Answer 1

HInt:

A ∩ B = {set of everything that is in BOTH sets A and B}

Answer 2

Ok Ty for hint bt can uu figure it out :D

Answer 3

is 1 in both sets?

Answer 4

um yah

Answer 5

what about 2?

Answer 6

mhm

Answer 7

you sure?

Answer 8

yah

Answer 9

is 2 in set B?

Answer 10

ohh no its not

Answer 11

ok what about 3?

Answer 12

is 3 in both sets?

Answer 13

basically I'm checking to see if each number in set A is also in set B

Answer 14

no

Answer 15

if it is, then you write that number down

Answer 16

keep going and check 4, 5, 6, etc etc

Answer 17

hmmm

Answer 18

did you figure it out