Some say the reason most manhole covers are round is that a circle cannot fall through a smaller circular hole. Which of ...

Brain teaser puzzles test the reader's critical thinking and problem-solving skills by challenging them to solve a problem.

Math is not everyone’s favorite, understandably. Hours of math homework and difficult equations can make anyone sour on the subject. But when math problems are outside of a school setting, there’s no ...

Brain teasers are excellent puzzle games for providing the brain with an effective mental workout. This math puzzle is a type ...

Brain teaser puzzles test the reader's critical thinking and problem-solving skills by challenging them to solve a problem.

The following is adapted from the introduction to “The Riddler: Fantastic Puzzles from FiveThirtyEight,” published by W. W. Norton & Co. It is in stores today! The world’s oldest collection of math ...

Imagine someone handing you a scrap of net from a basketball hoop, with knotted red cord attached to the netting, and telling you this bit of string is a clue in a puzzle. How quickly — if ever — ...

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

Two years ago, Nervous System set out to bring the jigsaw puzzle into the 21st century. Today, they’ve launched a series of puzzles designed with biomimicry software. The oldest jigsaw puzzles were ...