For non-empty sets A neq B, which is true?

  1. A B neq B A
  2. A B = B A
  3. n(A B) = n(A) + n(B)
  4. A B = A cup B
Answer

A) A B neq B A

Ordered pairs depend on order: (1, a) neq (a, 1), so in general A B neq B A. SLO M-09-A-15 · Knowledge

Mathematics MCQ · More Sets and Functions MCQs · Practise