Question

9. Represnt X, Y,and U in VENN DIAGRAM
X = (1,5,7} Y = (9,3,11) U = {1,2,3,5,7,9,11,15)​

Answer 1

Answer:

The difference of two subsets A and B is a subset of U, denoted by A – B and is defined by

A – B = {x : x ∈ A and x ∉ B}.

Let A and B be two sets. The difference of A and B, written as A - B, is the set of all those elements of A which do not belongs to B.

Thus A – B = {x : x ∈ A and x ∉ B} or A – B = {x ∈ A : x ∉ B}.

Clearly, x ∈ A – B

⇒ x ∈ A and x ∉ B

In the adjoining figure the shaded part represents A – B.