Question: LetXbe a set of n elements. How many different relations onXare there? How many of these relations are reflexive? Symmetric? Antisymmetric? Reflexive and symmetric? Reflexive

LetXbe a set ofnelements. How many different relations onXare there? How many of these relations are reflexive? Symmetric? Antisymmetric? Reflexive and symmetric? Reflexive and anti-symmetric?

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