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Sticky Note
The following correctly represents De Morgan's first law?
  1. (AUB)' = A'∩B'
  2. (A∩B)' = A'UB'
  3. (AUB) = A∩B
  4. None of these
Explanation

De Morgan's first law states that the complement of the union of two sets A and B is equal to the intersection of their complements.

The correct representation is:

(AUB)' = A' ∩ B'


Last verified on 10-02-2026

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