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Let $\mathbf{R}=\{(3,3),(6,6),(9,9),(12,12),(6,12),$, $(3,9),(3,12),(3,6)\}$ be a relation on the set $A=\{3,6,9,12\}$ be a relation on the set $A=\{3,6,9,12\} .$ The relation is

1) reflexive and transitive only
2) reflexive only
3) an equivalence relation
4) reflexive and symmetric only
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(1)

Explanation

Reflexive and transitive only.
e.g. $(3,3),(6,6),(9,9),(12,12)$ [Reflexive] $(3,6),(6,12),(3,12)$ [Transitive]

by Diamond (75,914 points)

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