Question

The shaded portion of which of the following Venn diagrams represents the set A - B?

• A.
• B.
• C.
• D.

Answer 1

The correct option is C

A - B is the set of elements belonging only to A, i.e. the set of elements which belong to A, but not to B.

The above diagram represents the set of elements belonging to A and B i.e. A ∩ B, the intersection of A and B.

The above diagram represents the set of elements belonging to B.
This diagram represents the set of elements outside of $A\cup B.$ i.e. $(A\cup B{)}^{\prime },$ the complement of $A\cup B.$

This diagram represents the set of elements belonging only to A, i.e. A - B, the difference of A and B.