Question: what are the unsolved math problems?
Answer: The Collatz Conjecture. Dave Linkletter. ... , Goldbach's Conjecture﻿ Creative Commons. ... , The Twin Prime Conjecture. Wolfram Alpha. ... , The Riemann Hypothesis. ... , The Birch and Swinnerton-Dyer Conjecture. ... , The Kissing Number Problem. ... , The Unknotting Problem. ... , The Large Cardinal Project.