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

You are participating in a holiday gift exchange with a few classmates. You each write down your own name on a slip of paper and fold it up. Then all the students place their names into a single hat.

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 ...

Here, count with me: 1, 2, 3, 4, 5, 6, 7, 8, 9, T, 11, 12 … Oh, what’s that? You write ten with “zero”? Fair enough. Zero, we have been told, is the ...

When looking for something to do to occupy your mind at home, why not try some online puzzles? We love an old fashioned jigsaw, but the internet is a valuable resource for finding some engaging and ...

Dr. Emma Chen, a renowned mathematician, has set the international math community abuzz with her latest numerical sequence puzzle. This challenging brain teaser has stumped even the most brilliant ...

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 ...

Who says math can't be fun?! Try these math puzzles for a delightful challenge. Math is not everyone’s favorite, understandably. Hours of math homework and difficult equations can make anyone sour on ...