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

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

Solution

De Morgan's second law: complement of intersection = union of complements.

Asked in: MH-SSC-9

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