To do this, let's first prove that the sequence $(x_n)$ is decreasing and positive. We will use induction.
Base case: $x_1 = 1 > 0$.
Inductive step: Assume $x_n > 0$. Then,
$x_{n+1} = \frac{x_n}{n+1} > 0$ since $x_n > 0$ and $n+1 > 0$.
Thus, the sequence
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