You can probably think of a time when you’ve used math to solve an everyday problem, such as calculating a tip at a restaurant or determining the square footage of a room. But what role does math play ...

Brain teasers, especially mathematical ones, have a unique way of engaging our minds. They challenge our logical thinking, improve problem-solving skills, and often leave us scratching our heads.

As children, Daniel Larsen, his sister Anne Larsen (center), and cousin Laura Quinto (left) strived to solve The New York Times crossword puzzle. Just a couple of years later, Daniel would publish his ...