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A function f: N+→N+, defined on the set of positive integers N+, satisfies the following properties f(n) = f(n2) if n is even f(n) = f(n + 5) if n is oddLet R = {i∣∃j:f(j=i)} be the set of distinct value that f takes. The maximum possible size of R is

Answer» A function f: N+N+, defined on the set of positive integers N+, satisfies the following properties



f(n) = f(n2) if n is even



f(n) = f(n + 5) if n is odd



Let R = {ij:f(j=i)} be the set of distinct value that f takes. The maximum possible size of R is


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