Question 26
Find the minimum value of
$$
\frac{x_1^3 + \cdots + x_n^3}{x_1 + \cdots + x_n}
$$
where $x_1, x_2, \dots, x_n$ are distinct positive integers.
$$
\frac{x_1^3 + \cdots + x_n^3}{x_1 + \cdots + x_n}
$$
where $x_1, x_2, \dots, x_n$ are distinct positive integers.