$(A \cup B)' = A' \cap B'$ is known as

$(A \cup B)' = A' \cap B'$ is known as
  1. De Morgan's first law
  2. De Morgan's second law
  3. Distributive law
  4. Associative law

Solution

De Morgan's first law: complement of a union equals intersection of complements.

Asked in: MH-SSC-9

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