2. Solve the inequality:

$$
\frac{1}{\sqrt{n}+\sqrt{n+1}}+\frac{1}{\sqrt{n+1}+\sqrt{n+2}}+\ldots+\frac{1}{\sqrt{n+119}+\sqrt{n+120}}>4
$$
Write the answer in the form of an interval. For example, the interval (-1;2] means that $1<x \leq 2$. If the boundary of the interval is "infinity," use the letter B.

Answer: $[0 ; 169)$