Question 3: How many natural numbers n are there for (n + 9) to be divisible by (n + 5)?

A. 3

B. 2

C. 1

D. 0

Since (n+5) (n+5), according to property 1 so that (n+9) (n+5), then [(n+9)−(n+5)](n+5) or 4 (n+5)

So (n+5) ∈ {1;2;4}.

Since n+5 ≥ 5, no value of n satisfies.

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