Question 467494
A lot of them have infinite number of solutions.

But there are also inequalities where the solution set is finite, or even the empty set!

For example, the inequality {{{abs(2x - 6) <= 0}}} has only the set {3} as solution set, while the inequality {{{x^4 +2x^2 + 3 < 0}}} has the empty set as solution set.