# Thread: set related question -

1. ## SOLVED - set related question -

I have another set related question here that I am trying to understand …

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A’ = U A = {x|x U x A}
A = {1, 2, 5, 6}
B = {2, 4, 7, 6, 1}
U = {1, 2, 3, 4, 5, 6, 7, 8}
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2. ## Re: set related question -

You only need to apply the given definition. For example, $B'=\{3,5,8\}$ .

3. ## Re: set related question -

Originally Posted by FernandoRevilla
You only need to apply the given definition. For example, $B'=\{3,5,8\}$ .
I still don't understand ... What do you mean with "apply the given definition" ?

Does this mean that if $B'=\{3,5,8\}$

Then this should be $A'=\{3,4,7,8\}$

and

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

Am I correct?

4. ## Re: set related question -

Originally Posted by iwan1981
I still don't understand ... What do you mean with "apply the given definition" ?

Does this mean that if $B'=\{3,5,8\}$

Then this should be $A'=\{3,4,7,8\}$

and

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

Am I correct?
Yes, you are.

5. ## Re: set related question -

Thank you very much!