Question: Let A = {5, 6), B = {5, 7, 8} and S = {n : n 3 is an odd integer). A relation R

Let A = {5, 6), B = {5, 7, 8} and S = {n : n ≥ 3 is an odd integer). A relation R from A x B to S is defined as (a, b) R s if s | (a + b). Is R a function from A x B to S?

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