Question

if a = {1,2,3,} b = {4,5,3,} then,A,B are called​

Answer 1

In the above question,

A = {1,2,3}

B = {4,5,3}

Only two element i.e 3 and {} (phy, empty set) belongs to A and B.

Hence A and B are unequal sets

--> A ≠ B

Also ,

n(A) = n(B) = 3 (Number of elements are equal)

Also,

A ∩ B = {3} (Intersection)

A U B = {1,2,3,4,5} (Union)