Question

Given the following, determine the set (A' U B') intersect (A U B)'.
U={1,2,3,4,5,6,7,8,}
A={1,3,4,7,8}
B={1,2,4,5}

Answer 1

Hi friend, your problem confused me, U is a set, A, B are subset of U, right? and the "U" in (A'UB') is union or set U. If it's "union," the problem turns clear. If it is U, I don't know what you mean. A' (do what with)U (do what with ) B .

Answer 2

U is union. not set U

Answer 3

ok, that must be!!!

Answer 4

you want to know how to get or just answer?

Answer 5

how to get it. i have to show my work.

Answer 6

good guy!! I guide you. now, tell me what A' is? in other words, A' =?

Answer 7

{1,3,4,7,8}

Answer 8

nope!! A' is a set whose members doesn't belong to A

Answer 9

oh right

Answer 10

so?

Answer 11

{2,5,6}

Answer 12

good, and B' =?

Answer 13

{3,6,7,8}

Answer 14

what does "union" mean?

Answer 15

together?

Answer 16

yes, so A' U B' =?

Answer 17

{2,3,5,6,7,8}

Answer 18

yep! let the whole thing there. write it down. left hand side

Answer 19

now right hand side. do the same, what is A U B = ?

Answer 20

{1,2,3,4,5,6,7,8}

Answer 21

sorry, omit 6, you don't have 6 in that group

Answer 22

why do you not include 6?

Answer 23

because A don't have 6 and either B, how can you have 6?

Answer 24

ohhh! okay i see

Answer 25

ok, so take 6 out, you just have { 1,2,3,4,5,7,8}, right?

Answer 26

yes

Answer 27

ok, (A U B ) ' = ?

Answer 28

Hint, members doesn't belong to group

Answer 29

wouldn't that be the numbers not in any of those sets?

Answer 30

yea! I give you hint already. which number (just one)

Answer 31

6?

Answer 32

hey, hurry up, your brother want to go to bed, try to help you . just a small step.
ok, you are right

Answer 33

you have right hand side is {6}. now tell me, what "intersection" mean

Answer 34

the numbers that are in both sets. {1,4}

Answer 35

hehe,,, wrong, guy!

Answer 36

the statement is right, the solution is wrong

Answer 37

left hand side {2,3,5,6,7,8 } intersect with {6} = ?

Answer 38

{6} is right hand side as above we count. so, the member appears in both group is ?

Answer 39

6

Answer 40

hehehe... thanks god, your brother can sleep now. YOU ARE RIGHT!

Answer 41

so the answer is 6?

Answer 42

YEAP!!

Answer 43

thank you!

Answer 44

and you know how to get it. can I log out?

Answer 45

yes

Answer 46

hehehe... bye

Answer 47

bye