Question

1. If A = {1,2} and B = {3,4). Find (A-B)
2. Is A and B are disjoint sets then write n (A U B).
3. If A = {1,2} and B = {3,4), then how many subscts will A x B have
and g(x) = 2x+1. Find f(x)g(x).​

Answer 1

Answer:

1, A-B= 1,2

2, A union B is 1,2,3,4