List of top Mathematics Questions on Limits asked in CUET (PG)

Let $f : \mathbb{R} \to \mathbb{R}$ be defined by \[ f(x) = \begin{cases} \frac{|x-4|}{x-4}, & x \neq 4 0, & x = 4 \end{cases} \] then $\lim_{x \to 4} f(x)$ is