Find the answer for Two-dimensional surface in math from the people who brought you the USA TODAY Daily Crossword Puzzle.

How many triangles can you count in this image? It’s harder than it looks and bound to baffle even the sharpest of brains for ...

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Math may not be everyone’s favorite subject but when it comes to matchstick puzzles, few can resist giving it a try. At first ...

In our recent puzzle “ The Wanderer’s Return ,” I wrote an intuition-based solution to avoid hairy algebraic calculations.

The New York Times announced last week that it will stop making Digits, a math puzzle game that debuted in beta in April. The last of these daily math puzzles will go up on August 8. Digits is a fun ...

Brain teasers are fun little puzzles that make you think in different ways. They might look simple at first, but they often ...

A graphic artist is testing everyone’s knowledge of algebra and spot-the-difference skills with a pictograph math problem that assigns numbers to different fruits. Gergely Dudás, of Hungary Budapest, ...