Reflexive Relation Quiz (5 Questions)

1. What must be true for a relation to be reflexive?

2. Is (4,4) required for reflexivity if 4 is in the set?

3. True or False: Reflexive means x is related to x.

4. Is the relation {(1,2), (2,1)} reflexive?

5. Why is reflexivity important in equivalence relations?

Answer Key

1. Every element must be related to itself

2. Yes

3. True

4. No

5. Because it ensures each element relates to itself