Question: kindly answer shortly plz ans on paper Question 7 Define a relation R on the set of integers Z by: a Rb if and only

kindly answer shortly plz ans on paper

Question 7 Define a relation R on the set of integers Z by: a Rb if and only if ab > 0 (a) Show that R is symmetric. (b) Show that R is transitive. (c) Show that R is not reflexive. (d) Which minimal set of pairs should be added to R to make it an equivalence relation, and what would the equivalence classes be for equivalence relation

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