Show that the relation \( R \) in the set \( A=\{x \in W, 0 \leq x \leq 17\} \) given by \( \mat...

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Show that the relation \( R \) in the set \( A=\{x \in W, 0 \leq x \leq 17\} \) given by \( \mathbf{R}=\{(a, b):|a-b| \) is a multiple of 5\( \} \)
are equivalence relations. Find the set of all elements related to 2 in each case.
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