Question

A relation $R$ in a set $A$ is called universal relation, if

• A. each element of $A$ is not related to every element of $A$
• B. no element of $A$ is related to any element of $A$
• C. each element of $A$ is related to every element of $A$
• D. None of the above

Answer 1

Answer: (C)

A relation $R$ in a set $A$ is called universal relation, if each element of $A$ is related to every element of $A$, i.e., $R=A\times A$