Question

A={1,3,5,7,9}
B={2,4,6,8,10}
C={1,5,6,7,9}
A∩{B∪C}=?
is this an empty set?

Answer 1

could u find B∪C ?

Answer 2

Wouldn't that be 1,2,4,5,6,7,8,9,10?

Answer 3

yes, correct.
you know what ∩ mean ?

Answer 4

I don't know the definition of it but I know what it is. Like take Set B and C for instance, you would get 6 because that is the number they have in common right?

Answer 5

yes! exactly
∩ means common elements.

Answer 6

so, what is common in
1,2,4,5,6,7,8,9,10
and
1,3,5,7,9

Answer 7

1,5,7,9

Answer 8

is that correct?

Answer 9

yes, that will be your A∩{B∪C}

Answer 10

thanks.

Answer 11

welcome ^_^

Answer 12

Do you mind helping me out with another similar problem?

Answer 13

sure :)

Answer 14

i meant i'll help... :P

Answer 15

A={1,3,5,7,9}
B={2,4,6,8,10}
C={1,5,6,7,9}
A∩{B∩C} =?

for this one would it be 1,5,7,9?

Answer 16

B∩C=... ?

Answer 17

common elements from B and C ?

Answer 18

1,2,4,5,6,7,8,9,10 and then set A has 1,3,5,7 so A∩{B∩C}= 1,3,5,7 right?

Answer 19

∩ means common elements
you took U

Answer 20

oh 1,5,7,9 then?

Answer 21

B∩C common elements from B and C which is just {6} ok ?

Answer 22

Okay.

Answer 23

now A∩{6} =... ?

Answer 24

1,5,6,7,9

Answer 25

u again took U !
common elements in
1,3,5,7,9
and
6
are ?

Answer 26

Nothing which is an empty set..

Answer 27

corect :)

Answer 28

any doubts ?

Answer 29

I have lots of doubts.

Answer 30

i meant for that question..

Answer 31

I still have doubts about it.

Answer 32

what ?

Answer 33

Just that the answer "empty set" isn't an option on my paper.

Answer 34

For that question.

Answer 35

what are the options ?

Answer 36

{1,5,7,9}; {1,3,5,6,7,9}; {1,5,6,7,9}

Answer 37

A∩{B∩C}
u sure asked its this?

Answer 38

Yeah. It's fine actually. I'm just going to skip it.