Brain teaser puzzles test the reader's critical thinking and problem-solving skills by challenging them to solve a problem. These challenges have the potential to boost intelligence and improve ...

Take this puzzle by the horns ...

Add Yahoo as a preferred source to see more of our stories on Google. What is 29 + 14? Some readers may solve the problem procedurally: line up the two numbers, add the ones column, carry the one, and ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

If you suspend a Rubik’s Cube near the corner of a room and shine lights at its exposed faces, it will cast square shadows on two walls and the floor. A real-world Rubik’s Cube has a gadget at its ...

While this three-step process is the ideal process of applied math, reality is more complicated. Once I reach the second step where I want the solution of the math problem, very often, if not most of ...

A man walks down a down-moving escalator and reaches the bottom after taking 50 steps. As an experiment, he then runs up the same escalator, one step at a time, and reaches the top after taking 125 ...

The solution to today’s puzzle ...