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.

There are two laws of primes (known as De Morgan's laws)

(A∩B)' = A' U B'

(AUB)' = A' ∩ B'

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