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Let A = {1, 2, 3, 4}. Let R be the equivalence relation on A×A defined by (a, b) R (c, d) if a + d = b + c. Find the equivalence class [(1, 3)].

Answer» Let A = {1, 2, 3, 4}. Let R be the equivalence relation on A×A defined by (a, b) R (c, d) if a + d = b + c. Find the equivalence class [(1, 3)].


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