Most problem banks optimise for volume — thousands of questions, endless drilling, a race to the next one. This isn't that. problemset is small on purpose.
Every question here earned its place because I found it genuinely interesting to think about, not just to solve. The goal is focused practice, not endless scrolling.
A good problem doesn't just test whether you know a formula — it asks you to see something. To notice a structure, reframe a question, or find the one observation that makes everything else fall into place.
Those are the problems collected here: ones that reward a shift in perspective rather than a memorised procedure.
Questions are organised by topic — number theory, trigonometry, calculus, combinatorics, and algebra — each with its own colour. Click any question to reveal its answer; where a worked video solution exists, you'll find a link to it.
You can filter by difficulty, search within a topic, share a direct link to any single problem, or copy a question as a clean image to send to a friend.
The set is currently pitched at the undergraduate level, covering five topics. It grows as I do — I add problems as my own mathematics deepens.
I'm Madhup. I built problemset because these problems mattered to me and I wanted a good home for them. If you know a problem you think belongs here, I'd love to see it — and if something looks off, tell me.
Reach me on Discord at @madhup.bh, or follow along on Telegram.
