Verify the De Morgan's law: with U = 1, 2, ldots, 10, A = 3, 7, 8, 9, 10, B = 4, 6, 7, 8, C = 4, 6, 7, 9, both (A cup B)' and A' cap B' equal:

  1. 7
  2. 4, 6, 7, 9
  3. 3, 4, 6, 7, 8, 9, 10
  4. 1, 2, 5
Answer

D) 1, 2, 5

Working out each side separately gives the same set 1, 2, 5, which verifies (A cup B)' = A' cap B'. SLO M-09-A-13 · Application

Mathematics MCQ · More Sets and Functions MCQs · Practise