Solve the following inequality: $\frac{2x+3}{5} - 2 < \frac{3(x-2)}{5}$

If $|x - 2| + |x - 3| = 7$,then $x =$

If $|x-2| \leq 1$,then

Let $a, b, c, d$ be numbers in the set $\{1, 2, 3, 4, 5, 6\}$ such that the curves $y = 2x^3 + ax + b$ and $y = 2x^3 + cx + d$ have no point in common. The maximum possible value of $(a - c)^2 + b - d$ is

The solution set of $\frac{x^{2}}{x^{2}+1} < 0$ is

Solve $24x < 100$,when $x$ is a natural number.