Verify the De Morgan's law: with U = 1, 2, ldots, 10, A = 2, 5, 6, 7, 10, B = 3, 4, 5, 8, C = 3, 8, 9, 10, both (A cap B)' and A' cup B' equal:

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

A) 1, 2, 3, 4, 6, 7, 8, 9, 10

Working out each side separately gives the same set 1, 2, 3, 4, 6, 7, 8, 9, 10, which verifies (A cap B)' = A' cup B'. SLO M-09-A-13 · Application

Mathematics MCQ · More Sets and Functions MCQs · Practise