# What is Math challenge: Definition and 82 Discussions

44. ### Challenge Math Challenge - February 2019

Time for our new winter challenge! This time our challenge has also two Computer Science related questions and a separate section with five High School math problems. Enjoy! Rules: a) In order for a solution to count, a full derivation or proof must be given. Answers with no proof will be...
45. ### Challenge Math Challenge - January 2019

Merry Christmas to all who celebrate it today! Rules: a) In order for a solution to count, a full derivation or proof must be given. Answers with no proof will be ignored. Solutions will be posted around 15th of the following month. b) It is fine to use nontrivial results without proof as long...
46. ### B Daily math challenge calendar (external)

I found this calendar with daily math puzzles. Based on the first three puzzles it seems to be much easier than the math challenges here, and require no advanced mathematics. The answer is always a three-digit number, and the answers to all 24 puzzles together create a larger puzzle.
47. ### Challenge Math Challenge - December 2018

It's December and we like to do a Special this month. The challenges will be posted like an Advent Calendar. We will add a new problem each day, from 12/1 to 12/25. They vary between relatively easy logical and numerical problems, calculations, to little proofs which hopefully add some...
48. ### Challenge Math Challenge - November 2018

Rules: a) In order for a solution to count, a full derivation or proof must be given. Answers with no proof will be ignored. Solutions will be posted around 15th of the following month. b) It is fine to use nontrivial results without proof as long as you cite them and as long as it is "common...
49. ### Challenge Math Challenge - October 2018

Summer is coming and brings ... Oops, time for a change! Fall (Spring) is here and what's better than to solve some tricky problems on a long dark evening (with the power of returning vitality all around). RULES: a) In order for a solution to count, a full derivation or proof must be given...
50. ### Challenge Intermediate Math Challenge - September 2018

Summer is coming and brings a new basic math challenge! Enjoy! For more advanced problems you can check our other basic level math challenge thread! RULES: a) In order for a solution to count, a full derivation or proof must be given. Answers with no proof will be ignored. Solutions will be...