Question

I'm learning about operations of sets and I'm so confuse...please help
D = {x|x is a whole number}
E = {x|x is a perfect square between 1 and 9}
F = {x|x is an even number greater than or equal to 2 and less than 9}

The number 4 is D∩(E∩F).

True
False

Answer 1

Look we have :
D={..,-2,-3,0,1,2,3,4,...}
E={4}
F={4,6,8}
What do you see in all of these ?:)
@ruthym

Answer 2

@E.ali
I see the number 4
How did you get those numbers???

Answer 3

With thier name !
caz whole numbers are - and + with 0 .
K ?:)

Answer 4

Okay I understand so they all had 4 in them

Answer 5

yes !
And in the F we can have just 4 caz :
\[\sqrt{4}\] has an answer !
And numbers for example :
\[\sqrt{3}\]
we cant say any answers for them !:)

Answer 6

@E.ali so it's true that 4 is the intersection in all of them??

Answer 7

Yes it s true .!

Answer 8

Okay I think I get it now...I'll keep practicing:)

Answer 9

K !
You re welcome !:)