About Probability Math Puzzles
This app offers over 90 probability math puzzles in three levels, from beginner to advanced. The intro puzzles are straightforward but some of the puzzles will be very challenging, even for people who have studied...
This app offers over 90 probability math puzzles in three levels, from beginner to advanced. The intro puzzles are straightforward but some of the puzzles will be very challenging, even for people who have studied college-level probability -- try answering them all! If you get stuck, there's a hint at the bottom of each page, and you can easily skip puzzles (and return to them later) by swiping horizontally. Have fun!
This app is great practice for quantitative interviews (including quant, finance and tech interviews), for college-level probability classes, or for anyone interested in mathematical puzzles.
I've included a math parser so that you can type equations as answers: if the answer is 0.49^2, for example, you can type 0.49^2 or 0.49*0.49 without having to work out the multiplication yourself. Enjoy!
Previous Versions
Here you can find the changelog of Probability Math Puzzles since it was posted on our website on 2016-12-26 10:41:51.
The latest version is 4.0 and it was updated on 2026-06-23 22:39:31. See below the changes in each version.
Probability Math Puzzles version 4.0
Updated At: 2025-10-11
Changes: New button to talk to Gemini and ask for a hint; modernized code; updated sharing button. And added a new Arabic translation!
Probability Math Puzzles version 3.9
Updated At: 2022-09-04
Changes: This version includes translations in German and Spanish! Check out the app's github repo for more information (there's a link at the bottom of the app's main screen), and please get in touch if you're interested in translating the puzzles into other languages.
Probability Math Puzzles version 3.8
Updated At: 2022-02-09
Changes: Two new puzzles, plus improved hints for several existing puzzles.
Probability Math Puzzles version 3.7
Updated At: 2020-10-27
Changes: New puzzle, improved hints, and a link to the app's repo for those who want to suggest new puzzles or peek at answers!
Probability Math Puzzles version 3.6
Updated At: 2020-03-08
Changes: No more ads! Improved hints for several easy puzzles, added a new easy puzzle, and added links to probability lectures.
Probability Math Puzzles version 3.0
Updated At: 2017-09-13
Changes: Updated math parser, links to probability notes, and a new easy puzzle.
Probability Math Puzzles version 2.7
Updated At: 2016-11-04
Changes: New in version 2.7: new puzzles in all difficulty levels (for a grand total of almost 80), and various small tweaks.
Disclaimer
Official Google Play Link
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