Question

if a relation is reflexive, then all the diagonal entries in the relationmatrix must​

Answer 1

$\huge\bf\blue{Answer:-}$

The answer to your question is therefore 2p. For reflexive and symmetric relations on an n-element set, consider the set to be in the form of an n x n matrix. ... Now for reflexive relations, based on the definition, this means that the main diagonal must all be present within our answer, and thus their value is set.