# Need help understanding Set Theory.

**Question description**

( A union symbol B) prime

Trying to understand is this the same as (A' intersection B')?

If so then my answer is part of the universal set that is not of a or b intersect.

Let U= {1,2,3,4,5,6,7} A= {4,5,6,7} B= {1,5,7} Find the Set?

please explain your answer.

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