How many functions (f: N N ) satisfy ( lcm (f(n), n)- hcf (f(n), n) 5 ? ) Here '1cm' denotes the least common multiple and 'hcf' denotes the highest common factor.

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Correct answer: D. More than one but finitely many

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How many functions (f: N N ) satisfy ( lcm (f(n), n)- hcf (f(n), n) 5 ? ) Here '1cm' denotes the least common multiple and 'hcf' denotes the highest common factor.

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