MathChallenges

MathChallenges is a collection of widely varied math puzzles and logic problems created by Theoni Pappas (author of The Mathematics Calendar) and Dale Lindley

A new Challenge is presented every day.   Some Challenges require logical reasoning, others a knowledge of high school level mathematics.  All require careful thinking!

Each challenge consists of three parts:
 • A statement of the Challenge. 
 • Need some help?  Press the Hint button.  
 • If you think you have the right solution, tap the Solution button.  Here you will find a step-by-step description of one or more ways to solve the challenge.

At any time you can revisit Challenges from past days by touching the “to the past” button.