Oct 28, 2017 · 3 Like the title says, I'm looking for math problems that are easy to understand, but difficult to see the solutions immediately or even after much thought; but when shown the …

Nov 20, 2022 · So, regardless of your “intelligence” (very hard and perhaps uninteresting to define!), I urge you not to think short problems are easy, or easy-looking answers beget easy …

Apr 28, 2017 · The problems that I am looking for should be be easy to state and have a solution that Requires only knowledge that an average matrix algebra student would be expected to …

Jun 12, 2019 · Finally, there is this list of $5$ interesting open problems by John. H. Conway (however, only $4$ of them are still open) All terminology used in the formulation of this …

I request people to list some moderately and/or very famous open problems which high school students,perhaps with enough contest math background, can understand, classified by …

Jul 11, 2024 · And by guess, I mean, try lots of things to see if it matches. This is how you solve relatively simple problems and problems that can be solved using existing methods. That does …

Dec 27, 2014 · 27 It's easy to multiply two 20-digit prime numbers, but what if you had to factor their product? There you have an easy problem and a hard problem.

I also find it helpful to work through at least one of the extra-involved problems at the end of the chapter, (you know, the one with three stars and a warning for how hard it is). Most books …

This question is a "corollary" (if you will) to the World's Hardest Easy Geometry Problem (external website). Formally, this is called Langley's Problem. The objective of that problem was to solve ...

Apr 28, 2022 · I want to teach them about proof by induction and I want them to do some exercises (you learn math by doing!). I am therefore looking for easy, elementary and maybe …