Question

How many functions f:N->N satisfy

lcm(f(n),n) - hcf(f(n),n) < 5?

lcm and hcf stand for lowest common multiple and highest common factor.

a) more than 1 but finitely many
b)1
c)0
d) infinitely many​

Answer 1

Answer:

a )is the confirm answer.

Step-by-step explanation:

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