Add Yahoo as a preferred source to see more of our stories on Google. We tend to think intelligence is about speed, trivia, or math tricks, but real cognitive sharpness shows up in unexpected places.

Your goal here is to be able to answer "yes" to most of these questions. You don't need to answer "yes" to all of these ...

Trump got intense when Llamas asked him about his age, pointing excitedly to his head and bragging about repeatedly "acing" a ...

The weekend has arrived, and you know what that means: it’s time for our weekly pub quiz!

This quiz is the perfect way to sharpen your knowledge and impress your friends with those quirky facts. With 10 entertaining questions, this pub quiz will get ...

Riddles are a type of brain teaser that comes in the form of questions, sentences, or statements. Riddles are great brain ...

The weekend has arrived, and you know what that means: it’s time for our weekly pub quiz!

Last week’s column presented 20 questions on vehicle and traffic law and traffic safety. Hopefully you took the test and kept ...

Think you're good at general knowledge? Take this week's pub quiz to see how you score.

People with a seriously low IQ tend to have obvious traits that show up in they ways they think, talk, and handle everyday ...

Optical illusions to find the hidden objects and numbers are effective at revealing your brainpower and visual IQ. How sharp ...

A brain teaser challenge is a type of IQ test that mostly involves solving a puzzle, cracking a code, finding a hidden object or mistake, or detecting the fault in the image. Brain teaser puzzles test ...