Are there any good math puzzle sites or apps?

I remember doing combinatorics puzzles and number theory exercises in platforms like Brilliant when I had a bit of free time. All the while learning something. But the last time I tried Brilliant I did not enjoy it as much and I can't afford it not anyway.

Does anyone have any recommendations of websites (or webrings), apps or games about or that touch on:

  • combinatorics puzzles
  • modular arithmetic puzzles
  • concepts or exercises of number theory
38 points · 9 comments · view on lemmy.world

9 Comments

Nora@lemmy.dbzer0.com · 9 pts · 101d

Nerdle is a daily math based worldle that is quite fun IMO.

48954246@lemmy.world · 7 pts · 101d

If you're on android check out the puzzle suite app on fdroid

https://f-droid.org/packages/com.sidhant.puzzle

Pamasich@kbin.earth · 7 pts · 101d

The problems are designed for programmers, but Project Euler comes to mind.

FinjaminPoach@lemmy.world · 4 pts · 101d (1 reply)

If you like doing long paper working, a youtube channel called mind your decisions has a vast wealth of problems. Some of them are duplicates with different variables. If you turn on youtube history you can effectiveky mark off how many you have solved.

I think scientific american has short maths and logic puzzles publiahed maybe weekly or daily. https://www.scientificamerican.com/games/math-puzzles/

FinjaminPoach@lemmy.world · 3 pts · 101d

Also shout out to cryptogram/cipher style games, which i see as reasonably mathematical

https://cyphrgame.com/ https://decipher.wtf/ https://cryptograms.puzzlebaron.com/play.php

I think the puzzle baron one might be dominated by bots because it has solve times of 1 second listed when i do it.

squirrel@cake.kobel.fyi · 4 pts · 101d

The @daily_fourmula@lemmy.ml bot posts math puzzles daily to !dailygames@lemmy.zip

triptrapper@lemmy.world · 4 pts · 101d

If you like geometry and trig, the apps Pythagorea and Euclidea are very fun puzzles. They're free and there are hundreds of puzzles. They get very difficult.

joshchandra@midwest.social · 3 pts · 101d

The app Mental Math actually improved my mental math indeed! While division can typically be estimated because it never goes into mixed numbers/fractions, it does eventually go into 5 digits' worth of all the 4 basic operations; you set the difficulty and climb as you like. I'd never multiplied so accurately in my life, haha.

thelasthippo@lemmy.world · 2 pts · 101d

i like simple math, i love this app. just cruise through; even has tutorials for tricks and stuff.

its called FastMath

https://apps.apple.com/app/id1551025256 Download FastMath for free from the Apple App Store.