"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 your mind with quick and fun brain teasers that are simple to start but harder to solve than they look.

Brain teasers are little quizzes that are designed to make you think in various different ways. They may seem to be easy initially, but they tend to bring twists. Getting them resolved is like a good ...

Brain teasers are fun little puzzles that make you think in clever ways. They test how well you notice things, how fast your brain works, and how sharp your eyes are. Spot the sneaky change hidden in ...

Brain teasers are fun, challenging puzzles that stimulate the mind and encourage creative thinking. They come in many forms- designed to test ridls, logic puzzles, number games, and wordplays- and ...

Tests your logic, reasoning, and lateral thinking. Today’s challenging puzzle is to find the odd letter “Z” among the “S” sequence series. So, if you think you're a genius with an 169+ IQ level, then ...

Brain teasers and optical illusions have yet again captured the internet’s attention. The latest to go viral is a challenging puzzle that conceals multiple animals within a single image. The brain ...