"If you have me, you want to share me. If you share me, you haven’t got me. What am I?" ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Researchers at Duke University monitored participants’ brain activity while they completed simple math ...

Add Yahoo as a preferred source to see more of our stories on Google. Who doesn't love a clever brain teaser puzzle? Also known as rebus puzzles, these visual brain teasers will challenge your wits!

Challenge yourself with 3 quick and fun brain teasers designed to test your logic, focus, and problem solving skills.

Only geniuses can solve this tricky riddle challenge. Test your intelligence and critical thinking skills with this riddle ...

Whether you’re looking to challenge your mind, entertain friends, or just enjoy a fun mental workout, riddles are a fantastic way to do it. While we often associate riddles with children’s games, some ...

Brain training games are games that allow players to complete tasks that practice specific cognitive skills that exercise their memory, attention span, logic, and fast thinking. Brain training ...

We love testing our brains every day. Whether it's with a tricky puzzle, learning a new language or doing a simple sudoku (emphasis on the simple here). And one of the easiest and most fun ways to ...

"Penny has five children" is a riddle about a lady and her penchant for giving her kids some rather unusual names. You know the first four, but can you guess the fifth? When you first encounter the ...

How Many Ducks Do You See? Try to Solve the Viral Riddle A Mother Has Four Sons: Try to Solve the Viral Riddle The "Four Hat" Riddle: Try to Solve the Viral Riddle Try to Solve the Viral "Mr. Smith ...