Question

if B is subset of A then A intersection ​

Answer 1

Answer:

mate please complete your questions

then post it......

Answer 2

Answer:

Suppose A and B are sets. Prove that A ⊆ B if and only if A ∩ B = A.

Here's how I see it being proved.

If A and B are sets,and the intersection of A and B is equal to A, then the elements in A are in both the set A and B. Therefore, the set of A is a subset of B since all the elements are contained in the interesection of sets A and B are equal to A.