**(i)** A ∩ B

A ∩ B denotes A intersection B. Common elements of A and B consists in this set.

Given A ⊂ B, every element of A are already an element of B.

A ∩ B = A

**(ii) **A ⋃ B

A ∪ B denotes A union B. Elements of either A or B or in both A and B consist in this set.

Given A ⊂ B, B is having all elements including elements of A.

A ∪ B = B

Answered by Sakshi | 1 year agoFind the symmetric difference A Δ B, when A = {1, 2, 3} and B = {3, 4, 5}.