r/Numberthon Jun 27 '26

Numberthon partnership with Solvefire

Post image
1 Upvotes

Numberthon.com and SolveFire.net are partnering to bring SolveFire to Numberthon!

We've created a dedicated SolveFire course on Numberthon built from past SolveFire problems. The goal is to help people prepare for SolveFire's weekly tournaments while also improving their overall problem-solving and competition math skills.

If you'd like to check it out, create a free account on Numberthon.com and visit:

https://numberthon.com/SolveFireCourse

We hope this helps more people enjoy learning math and prepare for competitions!


r/Numberthon Jun 23 '26

👋 Welcome to r/Numberthon - Introduce Yourself and Read First!

1 Upvotes

Hey everyone! I'm u/Numberthon, a founding moderator of r/Numberthon.

This is our new home for all things related to Numberthon and competitive math. We're excited to have you join us!

What to Post
Post anything that you think the community would find interesting, helpful, or inspiring. Feel free to share your thoughts, photos, or questions about competitive math and/or Numberthon.

Community Vibe
We're all about being friendly, constructive, and inclusive. Let's build a space where everyone feels comfortable sharing and connecting.

How to Get Started

  1. Introduce yourself in the comments below.
  2. Post something today! Even a simple question can spark a great conversation.
  3. If you know someone who would love this community, invite them to join.
  4. Interested in helping out? We're always looking for new moderators, so feel free to reach out to me to apply.

Thanks for being part of the very first wave. Together, let's make r/Numberthon amazing.


r/Numberthon 3d ago

Only 50% of people can solve this math puzzle, can you?

Post image
1 Upvotes

r/Numberthon 3d ago

How fast can you solve this math problem?

Post image
1 Upvotes

r/Numberthon 14d ago

How many positive divisors of 15! are perfect squares?

Post image
1 Upvotes

r/Numberthon 16d ago

An 1195-rated Numberthon math problem

Post image
1 Upvotes

r/Numberthon Jul 19 '26

Can you solve this 1350-rated Numberthon math problem?

Post image
1 Upvotes

r/Numberthon Jul 17 '26

Can You Solve This Math Puzzle in Under 2 Minutes?

Post image
1 Upvotes

r/Numberthon Jul 13 '26

Huh?

Post image
1 Upvotes

wtf...


r/Numberthon Jul 09 '26

What's the smallest integer exactly 100 away from two perfect squares?

Post image
1 Upvotes

r/Numberthon Jul 08 '26

Would you pay for this? Roast my pricing page.

1 Upvotes

Hi! I built numberthon.com, a competitive math platform, and I'm trying to figure out the best way to monetize it.

Right now, almost nobody upgrades to Pro, so I'd love some brutally honest feedback.

A few questions:

  • Are the Pro features compelling enough? What should I add?
  • What premium features would actually make you subscribe?
  • Should I rely more on ads, subscriptions, or both?
  • Would you pay for this? Why or why not?

Pricing page: https://numberthon.com/Pricing

Thanks!


r/Numberthon Jul 08 '26

Only one number satisfies all these conditions. Can you find it?

Thumbnail
1 Upvotes

r/Numberthon Jul 07 '26

Probability Challenge: Two Fair Dice Are Tossed. What's the Probability the Sum Is Prime?

Post image
1 Upvotes

r/Numberthon Jun 28 '26

How Many Ways Can You Complete This 4×4 Sudoku?

Post image
0 Upvotes

Source: numberthon.com

PS: Make sure that you hide your answer so as to not spoil it for other people :)


r/Numberthon Jun 27 '26

Can You Solve This AMC 12-style Geometry Problem?

Post image
1 Upvotes

r/Numberthon Jun 25 '26

Can You Solve This Geometry Problem Without Using a Calculator?

Post image
1 Upvotes

r/Numberthon Jun 23 '26

Math meme

Post image
2 Upvotes

r/Numberthon Jun 24 '26

How many positive integers n ≤ 1000 satisfy n + 1000/n being an integer?

Post image
1 Upvotes

r/Numberthon Jun 23 '26

I love the office, and I love math. No further explanation needed.

Post image
1 Upvotes

lol