What are some open-ended math problems?

Answer by  sususu (866)

There are lots of open problems in math. The Riemann hypothesis, the Collatz Conjecture, and the Goldbach conjecture are three well-known problems.

Answer by  falka (80)

Open-ended math problems abound. The Millenium Prize Problems are of particular note. Examples include the Riemann Hypothesis, the P=NP question, the Hodge Conjecture, and the Birch and Swinnerton-Dyer Conjecture.