This brain-teasing math problem created by Puzzles9 presents three pentagons, each with a set of five numbers. But there's a catch — the middle pentagon is missing a number in the bottom right ...

In recent years a number of clever coin-weighing or ball-weighing problems have aroused widespread interest. Here is a new and charmingly simple variation. You have 10 stacks of coins, each ...

Challenge your mind with this tricky math riddle! Can you guess the number that becomes 'even' when you remove just one ...

Brain teasers are a fun way to test one's thinking skills. These puzzles give the brain a quick workout. A recent challenge that went viral online has math lovers excited. The puzzle asks users to ...

The puzzle looks something like Scrabble, with a series of boxes that snake up, down and across a page. Some boxes have a number, others have a math symbol and some are blank.

The puzzle asks you to solve 15 + 16, but it’s not as simple as it looks. At first glance, it seems like a basic math problem ...

A Million Dollar Math Puzzle Just Got A Little Bit Closer To A Solution It's a result that's being described as "sensational".

In honor of the upcoming Super Bowl, here’s a math puzzle: Some scores cannot be achieved in American football without a safety or a two-point conversion — i.e., just using 3-point field goals ...