Question

3. Establish the following results for any two sets A and B :
ACB ABB
С) Ас В АВА
(it) A SBB SA
i) AB-ABA-B
4. Let A, B and C be any three sets. Prove that
( A-BAB​

Answer 1

Answer:

we have to prove A∩B⊂A

∵ A∩B is set of all that elements that belongs to both A and B. Hence, all elements of A∩B contained in A.

Hence,

A∩B⊂A